# Klaviyo vs Sleeknote: popups, forms, email and pricing compared
Compare Klaviyo and Sleeknote across forms, targeting, Shopify, games, experiments, email, agent access and pricing, with fifteen scored rounds and priority scenarios.
- Page: https://popuppapa.com/klaviyo-vs-sleeknote/
- Published: 2026-10-20; updated: 2026-10-20
- Klaviyo review: https://popuppapa.com/reviews/klaviyo/index.md
- Sleeknote review: https://popuppapa.com/reviews/sleeknote/index.md
## What do you need your website to do next?
If you already send email with Klaviyo, Sleeknote is often an addition rather than a replacement. It can collect contacts and answers, then send them into the profiles and flows you already use.
The reasons to add it are specific: a broader game campaign, an outcome quiz, a different mobile experience or several domains in one popup subscription. Klaviyo’s own forms already cover common fields, targeting and experiments.
We compare those differences across the shared criteria, including native email as a separate requirement. The pricing table uses the same fixed euro-to-dollar conversion as our other Sleeknote comparison.
## How the comparison works
15 rounds compare both platforms against the same 194 capability criteria, with 100 points distributed across the sections. Each round explains the practical differences and adds to the running score. The table beneath each round shows how the points are awarded, with the source behind each verdict.
## Round 1: Formats & content
Weight: 9 points.
Klaviyo focuses its onsite editor on signup forms, including popup, flyout and embedded layouts. Mobile settings adapt the signup experience to smaller screens. Sleeknote separates desktop and mobile campaign designs and display settings. Teasers provide another entry point; on mobile, enabling a teaser replaces the usual opening triggers.
| Criterion | Klaviyo | Sleeknote | Evidence |
| --- | --- | --- | --- |
| Message | Not confirmed | Not confirmed | Klaviyo: [Message](https://www.klaviyo.com/uk/features/web-forms), 2026-09-30 · Sleeknote: [Message](https://help.sleeknote.com/hc/en-us/articles/6990623534749-Choosing-a-Campaign-Type), 2026-09-30 |
| Flyby / slide-in | (+0.75) | Not confirmed | Klaviyo: [Flyby / slide-in](https://help.klaviyo.com/hc/en-us/articles/360026474752), 2026-10-17 |
| Promo bars | (+0.75) | Not confirmed | Klaviyo: [Promo bars](https://help.klaviyo.com/hc/en-us/articles/360026474752), 2026-10-17 |
| Teasers | (+0.38) | (+0.38) | Klaviyo: [Teasers](https://help.klaviyo.com/hc/en-us/articles/4411540984859), 2026-10-17 · Sleeknote: [Teasers](https://app.sleeknote.com/dashboard/), 2026-10-09 |
| Content carousel | Not confirmed | Not confirmed | — |
| Eye-catching | Not confirmed | Not confirmed | — |
| Countdown | (+0.38) | (+0.38) | Klaviyo: [Countdown](https://help.klaviyo.com/hc/en-us/articles/360026474752), 2026-09-29 · Sleeknote: [Countdown](https://sleeknote.com/features), 2026-10-09 |
| Dynamic text | Not confirmed | Not confirmed | — |
| Mobile editor | Desktop and mobile views, with flyout position and device-specific blocks. (+0.38) | Edit desktop and mobile designs separately. (+0.38) | Klaviyo: [Mobile editor](https://help.klaviyo.com/hc/en-us/articles/4406161800987), 2026-10-17 · Sleeknote: [Mobile editor](https://app.sleeknote.com/dashboard/), 2026-10-09 |
Round score: Klaviyo +2.63 (total 2.63), Sleeknote +1.13 (total 1.13).
## Round 2: Forms
Weight: 12.6 points.
Klaviyo has more confirmed coverage of the shared signup-quality controls. Sleeknote’s outcome quizzes are a different reason to choose it: guided discovery and preferences that can then feed Klaviyo. Klaviyo collects email, phone, text, radio, dropdown and checkbox answers across multiple steps. Consent and hidden properties attach to the profile. Phone-format checks, CAPTCHA and double opt-in help protect the list; mobile tap-to-text provides another SMS signup route.
Sleeknote collects phone numbers, text, radios, dropdowns, answer buttons and consent checkboxes across multiple steps. Its paid Quiz format maps answer combinations to personalised outcomes and passes answer values to an email platform or CSV. Phone controls include format and accepted-country restrictions.
| Criterion | Klaviyo | Sleeknote | Evidence |
| --- | --- | --- | --- |
| Email capture | Subscribers go straight to Klaviyo's own contact lists. (+0.16) | (+0.16) | Klaviyo: [Email capture](https://help.klaviyo.com/hc/en-us/articles/115005076767), 2026-09-29 · Sleeknote: [Email capture](https://sleeknote.com/integrations/), 2026-10-09 |
| SMS capture | (+0.16) | (+0.16) | Klaviyo: [SMS capture](https://help.klaviyo.com/hc/en-us/articles/9351341171995), 2026-10-08 · Sleeknote: [SMS capture](https://app.sleeknote.com/dashboard/), 2026-10-09 |
| Phone field | Phone numbers are checked for format. (+0.16) | (+0.16) | Klaviyo: [Phone field](https://help.klaviyo.com/hc/en-us/articles/4413550187035), 2026-10-17 · Sleeknote: [Phone field](https://app.sleeknote.com/dashboard/), 2026-10-09 |
| Single choice | Radio buttons or a dropdown. (+0.16) | (+0.16) | Klaviyo: [Single choice](https://help.klaviyo.com/hc/en-us/articles/4413550187035), 2026-10-17 · Sleeknote: [Single choice](https://app.sleeknote.com/dashboard/), 2026-10-09 |
| Multiple choice | (+0.32) | Not confirmed | Klaviyo: [Multiple choice](https://help.klaviyo.com/hc/en-us/articles/4413550187035), 2026-10-17 |
| Free text | Text inputs for names or open comments. (+0.16) | (+0.16) | Klaviyo: [Free text](https://help.klaviyo.com/hc/en-us/articles/4413550187035), 2026-10-17 · Sleeknote: [Free text](https://app.sleeknote.com/dashboard/), 2026-10-09 |
| Consent checkbox | (+0.48) · Consent checkbox: (+0.16) · Email marketing consent: A marketing consent block can be required and also asks for email open and click tracking consent. (+0.32) | (+0.16) | Klaviyo: [Consent checkbox](https://help.klaviyo.com/hc/en-us/articles/4413550187035), 2026-10-17; [Consent checkbox: Email marketing consent](https://help.klaviyo.com/hc/en-us/articles/4413550187035), 2026-10-17; [Consent checkbox](https://help.klaviyo.com/hc/en-us/articles/4413550187035), 2026-10-17; [Consent checkbox](https://help.klaviyo.com/hc/en-us/articles/4413550187035), 2026-10-17 · Sleeknote: [Consent checkbox](https://app.sleeknote.com/dashboard/), 2026-10-09; [Consent checkbox](https://app.sleeknote.com/dashboard/), 2026-10-09; [Consent checkbox](https://app.sleeknote.com/dashboard/), 2026-10-09; [Consent checkbox](https://app.sleeknote.com/dashboard/), 2026-10-09 |
| Hidden fields | Hidden properties on the submit button are saved to the profile. (+0.32) | Not confirmed | Klaviyo: [Hidden fields](https://help.klaviyo.com/hc/en-us/articles/4413550187035), 2026-10-17 |
| Multi-step | (+0.32) · Multi-step: (+0.16) · Popup steps: A form can have several steps, for example email on one and phone on another. (+0.16) | (+0.32) · Multi-step: (+0.16) · Popup steps: (+0.16) | Klaviyo: [Multi-step](https://help.klaviyo.com/hc/en-us/articles/360026474752), 2026-09-29; [Multi-step: Popup steps](https://help.klaviyo.com/hc/en-us/articles/360026474752), 2026-10-17; [Multi-step](https://help.klaviyo.com/hc/en-us/articles/360026474752), 2026-09-29 · Sleeknote: [Multi-step](https://app.sleeknote.com/dashboard/), 2026-10-09; [Multi-step](https://app.sleeknote.com/dashboard/), 2026-10-09; [Multi-step](https://app.sleeknote.com/dashboard/), 2026-10-09 |
| Logic | Not confirmed | Not confirmed | — |
| Validation | (+0.65) · Validation: (+0.16) · Field validation: (+0.16) · Phone format: The phone field checks that the number is stored in an acceptable format. (+0.16) · Required fields: Any input can be required, with editable required and invalid messages. (+0.16) | (+0.65) · Validation: (+0.16) · Field validation: (+0.16) · Phone format: (+0.16) · Required fields: (+0.16) | Klaviyo: [Validation](https://help.klaviyo.com/hc/en-us/articles/360026474752), 2026-10-17; [Validation: Field validation](https://help.klaviyo.com/hc/en-us/articles/360026474752), 2026-10-17; [Validation](https://help.klaviyo.com/hc/en-us/articles/360026474752), 2026-10-17; [Validation: Phone format](https://help.klaviyo.com/hc/en-us/articles/4413550187035), 2026-10-17; [Validation: Required fields](https://help.klaviyo.com/hc/en-us/articles/360026474752), 2026-10-17; [Validation](https://help.klaviyo.com/hc/en-us/articles/360026474752), 2026-10-17; [Validation](https://help.klaviyo.com/hc/en-us/articles/360026474752), 2026-10-17; [Validation](https://help.klaviyo.com/hc/en-us/articles/360026474752), 2026-10-17; [Validation](https://help.klaviyo.com/hc/en-us/articles/360026474752), 2026-10-17; [Validation: Phone verification](https://help.klaviyo.com/hc/en-us/articles/9351341171995), 2026-10-17 · Sleeknote: [Validation](https://sleeknote.com/features), 2026-09-29; [Validation: Field validation](https://help.sleeknote.com/hc/en-us/articles/6984730678941-Phone-Input-Field), 2026-10-16; [Validation](https://sleeknote.com/features), 2026-09-29; [Validation: Phone format](https://help.sleeknote.com/hc/en-us/articles/6984730678941-Phone-Input-Field), 2026-10-16; [Validation: Required fields](https://help.sleeknote.com/hc/en-us/articles/6984730678941-Phone-Input-Field), 2026-10-16; [Validation](https://sleeknote.com/features), 2026-09-29; [Validation](https://sleeknote.com/features), 2026-09-29; [Validation](https://sleeknote.com/features), 2026-09-29; [Validation](https://sleeknote.com/features), 2026-09-29; [Validation](https://sleeknote.com/features), 2026-09-29 |
| CAPTCHA | (+0.32) | Not confirmed | Klaviyo: [CAPTCHA](https://help.klaviyo.com/hc/en-us/articles/360026474752), 2026-09-29 |
| Email double opt-in | (+0.32) | Not confirmed | Klaviyo: [Email double opt-in](https://help.klaviyo.com/hc/en-us/articles/9890182538011), 2026-09-29 |
| Follow-up | (+1.94) · Follow-up: (+0.32) · After signup: (+0.32) · Email automation: (+0.32) · Email sequences: Flows chain messages with delays between them. (+0.32) · Delays and branches: Flows add time delays and can split paths, for example by product. (+0.32) · Lifecycle triggers: A list-triggered flow starts when someone joins a list, including via a sign-up form. (+0.32) | Not confirmed | Klaviyo: [Follow-up](https://help.klaviyo.com/hc/en-us/articles/115002775172), 2026-09-29; [Follow-up](https://help.klaviyo.com/hc/en-us/articles/115002775172), 2026-09-29; [Follow-up](https://help.klaviyo.com/hc/en-us/articles/115002775172), 2026-09-29; [Follow-up](https://help.klaviyo.com/hc/en-us/articles/115002775172), 2026-09-29; [Follow-up: Email automation](https://help.klaviyo.com/hc/en-us/articles/115002775172), 2026-10-17; [Follow-up: Email sequences](https://help.klaviyo.com/hc/en-us/articles/115003885212), 2026-10-17; [Follow-up: Delays and branches](https://help.klaviyo.com/hc/en-us/articles/115002779431), 2026-10-17; [Follow-up: Lifecycle triggers](https://help.klaviyo.com/hc/en-us/articles/115002775172), 2026-10-17 |
Round score: Klaviyo +5.49 (total 8.12), Sleeknote +1.94 (total 3.06).
## Round 3: Surveys
Weight: 4.5 points.
Klaviyo’s signup fields can collect preferences and customer information. Dedicated rating and quiz formats are assessed separately below. Sleeknote’s quizzes map combinations of answers to personalised outcomes and can send those answers to an email platform or CSV. Quizzes belong to the Gamification package; individual rating formats are checked separately.
| Criterion | Klaviyo | Sleeknote | Evidence |
| --- | --- | --- | --- |
| Numeric rating | Not confirmed | Not confirmed | — |
| NPS | Not confirmed | Not confirmed | — |
| Star rating | Not confirmed | Not confirmed | — |
| Emoji rating | Not confirmed | Not confirmed | — |
| Binary rating | Not confirmed | Not confirmed | — |
| Quizzes | Not confirmed | (+0.82) · Quizzes: (+0.41) · Outcome screens: (+0.41) | Sleeknote: [Quizzes](https://help.sleeknote.com/quiz#outcome-logic-setup), 2026-10-09; [Quizzes](https://help.sleeknote.com/quiz#outcome-logic-setup), 2026-10-09; [Quizzes](https://help.sleeknote.com/quiz#outcome-logic-setup), 2026-10-09; [Quizzes](https://help.sleeknote.com/quiz#outcome-logic-setup), 2026-10-09; [Quizzes](https://help.sleeknote.com/quiz#outcome-logic-setup), 2026-10-09; [Quizzes](https://help.sleeknote.com/quiz#outcome-logic-setup), 2026-10-09 |
Round score: Klaviyo +0 (total 8.12), Sleeknote +0.82 (total 3.88).
## Round 4: Gamification
Weight: 4.5 points.
Sleeknote offers the wider game toolkit and earns the higher score here. Klaviyo’s wheel may be enough for a straightforward signup promotion; Sleeknote’s extra package matters when the game itself is the campaign. Klaviyo offers a spin-to-win block with two to six slices. Each slice has a probability, success step and coupon. The signup can sit before or alongside the spin. This establishes a configurable wheel, not a library of scratch cards, calendars or outcome quizzes. Sleeknote’s Gamification package includes wheels, scratch cards, seasonal calendars, quizzes and Learn to Earn. Wheels support weighted prizes and losing outcomes. Calendar doors open on set dates; Learn to Earn combines lessons, questions and staged rewards.
| Criterion | Klaviyo | Sleeknote | Evidence |
| --- | --- | --- | --- |
| Spin the wheel | 2 to 6 slices, each with its own success step and coupon. (+0.26) · Spin the wheel: 2 to 6 slices, each with its own success step and coupon. (+0.13) · Prize weights: Each slice gets its own probability, at least 1%, adding up to 100%. (+0.13) | (+0.53) · Spin the wheel: (+0.13) · Prize weights: (+0.13) · Losing slices: (+0.26) | Klaviyo: [Spin the wheel](https://help.klaviyo.com/hc/en-us/articles/34614633330075), 2026-10-17; [Spin the wheel: Prize weights](https://help.klaviyo.com/hc/en-us/articles/34614633330075), 2026-10-17; [Spin the wheel](https://help.klaviyo.com/hc/en-us/articles/34614633330075), 2026-10-17 · Sleeknote: [Spin the wheel](https://help.sleeknote.com/hc/en-us/articles/6984352270493-Spin-to-Win), 2026-10-09; [Spin the wheel](https://help.sleeknote.com/hc/en-us/articles/6984352270493-Spin-to-Win), 2026-10-09; [Spin the wheel](https://help.sleeknote.com/hc/en-us/articles/6984352270493-Spin-to-Win), 2026-10-09 |
| Slot machine | Not confirmed | Not confirmed | — |
| Plinko | Not confirmed | Not confirmed | — |
| Lottery ball | Not confirmed | Not confirmed | — |
| Claw machine | Not confirmed | Not confirmed | — |
| Scratch card | Not confirmed | (+0.26) | Sleeknote: [Scratch card](https://help.sleeknote.com/hc/en-us/articles/21518309115293-Scratch-to-Win), 2026-10-09 |
| Pick a gift | Not confirmed | Not confirmed | — |
| Pick a card | Not confirmed | Not confirmed | — |
| Break the egg | Not confirmed | Not confirmed | — |
| Shake the tree | Not confirmed | Not confirmed | — |
| Memory cards | Not confirmed | Not confirmed | — |
| Treasure hunt | Not confirmed | Not confirmed | — |
| Learn to earn | Not confirmed | (+0.26) | Sleeknote: [Learn to earn](https://sleeknote.com/klaviyo-and-sleeknote), 2026-10-09 |
| Seasonal calendar | Not confirmed | (+0.26) | Sleeknote: [Seasonal calendar](https://help.sleeknote.com/hc/en-us/articles/22774387107229-Seasonal-Calendar), 2026-10-09 |
| Daily offers | Not confirmed | (+0.26) | Sleeknote: [Daily offers](https://help.sleeknote.com/hc/en-us/articles/6984289783069-Daily-Offers), 2026-10-09 |
Round score: Klaviyo +0.26 (total 8.38), Sleeknote +1.59 (total 5.47).
## Round 5: Targeting
Weight: 10.8 points.
The round is tied. Klaviyo uses form priorities and customer segments; Sleeknote has explicit campaign ordering and domain-level limits. Choose the workflow that matches how you organise offers. Klaviyo combines URL, UTM, device and location rules with lists and customer segments. Delay, scroll, exit and click triggers control the opening moment. Frequency settings limit repeat appearances, and form priorities decide which queued campaign appears first. Sleeknote combines URL, device, location, referral, UTM, cookie and new-visitor rules with time, scroll, exit, click and SiteData triggers. Per-campaign limits, a domain-level impression limit and Campaign order keep campaigns from competing.
| Criterion | Klaviyo | Sleeknote | Evidence |
| --- | --- | --- | --- |
| Page targeting | URL rules with wildcards and UTM filters. (+0.23) | (+0.23) | Klaviyo: [Page targeting](https://help.klaviyo.com/hc/en-us/articles/4413544555547), 2026-10-17 · Sleeknote: [Page targeting](https://sleeknote.com/features), 2026-10-09 |
| Geo targeting | Countries or other locations, from the visitor's IP address. (+0.23) | (+0.23) | Klaviyo: [Geo targeting](https://help.klaviyo.com/hc/en-us/articles/4413544555547), 2026-10-17 · Sleeknote: [Geo targeting](https://sleeknote.com/features), 2026-10-09 |
| Device targeting | (+0.23) | (+0.23) | Klaviyo: [Device targeting](https://help.klaviyo.com/hc/en-us/articles/4413544555547), 2026-10-17 · Sleeknote: [Device targeting](https://app.sleeknote.com/dashboard/), 2026-10-09 |
| Audience targeting | (+2.7) · Audience targeting: (+0.23) · Referrer targeting: UTM source, medium, campaign, term and ID. (+0.23) · Cart targeting: Total cart value or specific products. (+0.45) · Profile targeting: (+0.45) · Customer tags: Segments built on the Shopify Tags property can decide who sees a form. (+0.45) · Order history: (+0.45) · List segments: Include or exclude lists and segments for cookied visitors. (+0.45) | Use referral, UTM, cookies and new-visitor conditions. (+0.9) · Audience targeting: Use referral, UTM, cookies and new-visitor conditions. (+0.23) · New/returning visitors: (+0.45) · Referrer targeting: (+0.23) | Klaviyo: [Audience targeting](https://help.klaviyo.com/hc/en-us/articles/4413544555547), 2026-10-17; [Audience targeting](https://help.klaviyo.com/hc/en-us/articles/4413544555547), 2026-10-17; [Audience targeting: Referrer targeting](https://help.klaviyo.com/hc/en-us/articles/4413544555547), 2026-10-17; [Audience targeting: Cart targeting](https://help.klaviyo.com/hc/en-us/articles/4413544555547), 2026-10-17; [Audience targeting: Profile targeting](https://help.klaviyo.com/hc/en-us/articles/4413544555547), 2026-10-17; [Audience targeting: Customer tags](https://help.klaviyo.com/hc/en-us/articles/115005080907), 2026-10-17; [Audience targeting](https://help.klaviyo.com/hc/en-us/articles/4413544555547), 2026-10-17; [Audience targeting: Order history](https://help.klaviyo.com/hc/en-us/articles/4413544555547), 2026-10-17; [Audience targeting: List segments](https://help.klaviyo.com/hc/en-us/articles/4413544555547), 2026-10-17 · Sleeknote: [Audience targeting](https://app.sleeknote.com/dashboard/), 2026-10-09; [Audience targeting](https://app.sleeknote.com/dashboard/), 2026-10-09; [Audience targeting](https://app.sleeknote.com/dashboard/), 2026-10-09; [Audience targeting](https://app.sleeknote.com/dashboard/), 2026-10-09; [Audience targeting](https://app.sleeknote.com/dashboard/), 2026-10-09; [Audience targeting](https://app.sleeknote.com/dashboard/), 2026-10-09; [Audience targeting](https://app.sleeknote.com/dashboard/), 2026-10-09; [Audience targeting](https://app.sleeknote.com/dashboard/), 2026-10-09; [Audience targeting](https://app.sleeknote.com/dashboard/), 2026-10-09 |
| Behavior triggers | (+1.35) · Behavior triggers: (+0.23) · Time delay: (+0.23) · Exit intent: (+0.23) · Scroll trigger: (+0.23) · Custom event trigger: (+0.45) | (+0.9) · Behavior triggers: (+0.23) · Time delay: (+0.23) · Exit intent: (+0.23) · Scroll trigger: (+0.23) | Klaviyo: [Behavior triggers](https://help.klaviyo.com/hc/en-us/articles/4413544555547), 2026-10-17; [Behavior triggers: Time delay](https://help.klaviyo.com/hc/en-us/articles/4413544555547), 2026-10-17; [Behavior triggers: Exit intent](https://help.klaviyo.com/hc/en-us/articles/4413544555547), 2026-10-17; [Behavior triggers: Scroll trigger](https://help.klaviyo.com/hc/en-us/articles/4413544555547), 2026-10-17; [Behavior triggers](https://help.klaviyo.com/hc/en-us/articles/4413544555547), 2026-10-17; [Behavior triggers](https://help.klaviyo.com/hc/en-us/articles/4413544555547), 2026-10-17; [Behavior triggers: Custom event trigger](https://help.klaviyo.com/hc/en-us/articles/4418052317339), 2026-10-17; [Behavior triggers](https://help.klaviyo.com/hc/en-us/articles/4413544555547), 2026-10-17 · Sleeknote: [Behavior triggers](https://app.sleeknote.com/dashboard/), 2026-10-09; [Behavior triggers: Time delay](https://app.sleeknote.com/dashboard/), 2026-10-09; [Behavior triggers: Exit intent](https://app.sleeknote.com/dashboard/), 2026-10-09; [Behavior triggers: Scroll trigger](https://app.sleeknote.com/dashboard/), 2026-10-09; [Behavior triggers](https://app.sleeknote.com/dashboard/), 2026-10-09; [Behavior triggers](https://app.sleeknote.com/dashboard/), 2026-10-09; [Behavior triggers](https://app.sleeknote.com/dashboard/), 2026-10-09; [Behavior triggers](https://app.sleeknote.com/dashboard/), 2026-10-09 |
| Click trigger | (+0.23) | (+0.23) | Klaviyo: [Click trigger](https://help.klaviyo.com/hc/en-us/articles/4418052317339), 2026-10-17 · Sleeknote: [Click trigger](https://sleeknote.com/features), 2026-10-09 |
| Scheduling | (+0.23) | (+0.23) | Klaviyo: [Scheduling](https://help.klaviyo.com/hc/en-us/articles/360002049952), 2026-10-17 · Sleeknote: [Scheduling](https://sleeknote.com/features), 2026-10-09 |
| Frequency cap | Days to wait before a closed form returns, or show it on every visit. (+0.23) | (+0.23) | Klaviyo: [Frequency cap](https://help.klaviyo.com/hc/en-us/articles/4413544555547), 2026-10-17 · Sleeknote: [Frequency cap](https://sleeknote.com/features), 2026-10-09 |
| Campaign control | Low, Medium, High or Highest priority decides which queued form shows first. (+0.23) | (+0.23) | Klaviyo: [Campaign control](https://help.klaviyo.com/hc/en-us/articles/4413544555547), 2026-10-17 · Sleeknote: [Campaign control](https://sleeknote.com/features), 2026-10-09 |
Round score: Klaviyo +5.62 (total 14.01), Sleeknote +3.38 (total 8.84).
## Round 6: Experiments
Weight: 6.3 points.
Klaviyo supports more variations and a confirmed automatic-winner workflow. Sleeknote covers the practical two-campaign comparison; its read-only MCP can bring results into an assistant’s analysis. Klaviyo tests up to seven form variations, divides traffic evenly or by configured weights, and supports automatic winner selection. Results include revenue per variation. A test between form designs does not itself establish a no-form control group. Sleeknote Core includes split testing between two campaigns, with traffic allocation starting at 50/50. Saving the setup and activating the test are separate actions.
| Criterion | Klaviyo | Sleeknote | Evidence |
| --- | --- | --- | --- |
| A/B testing | Up to 7 form variations. (+3.85) · A/B testing: Up to 7 form variations. (+0.35) · Popup tests: Sign-up forms can be tested with up to 7 variations. (+0.35) · Traffic split: Manual weights set each variation's share of traffic, adding up to 100%. (+0.35) · Automatic winner: The test can end on a statistically significant winner or a set date, and the winner goes live. (+0.7) · Email or SMS campaign tests: (+0.7) · Email tests: (+0.7) · SMS tests: (+0.7) | (+1.05) · A/B testing: (+0.35) · Popup tests: (+0.35) · Traffic split: Allocate traffic between two campaigns; the initial split is 50/50. (+0.35) | Klaviyo: [A/B testing](https://help.klaviyo.com/hc/en-us/articles/360045462071), 2026-10-17; [A/B testing: Popup tests](https://help.klaviyo.com/hc/en-us/articles/360045462071), 2026-10-17; [A/B testing](https://help.klaviyo.com/hc/en-us/articles/360045462071), 2026-10-17; [A/B testing: Traffic split](https://help.klaviyo.com/hc/en-us/articles/360045462071), 2026-10-17; [A/B testing](https://help.klaviyo.com/hc/en-us/articles/360045462071), 2026-10-17; [A/B testing: Automatic winner](https://help.klaviyo.com/hc/en-us/articles/360045462071), 2026-10-17; [A/B testing: Email or SMS campaign tests](https://help.klaviyo.com/hc/en-us/articles/115005228148), 2026-10-17; [A/B testing: Email tests](https://help.klaviyo.com/hc/en-us/articles/115005228148), 2026-10-17; [A/B testing: SMS tests](https://help.klaviyo.com/hc/en-us/articles/115005228148), 2026-10-17 · Sleeknote: [A/B testing](https://sleeknote.com/features), 2026-10-09; [A/B testing](https://sleeknote.com/features), 2026-10-09; [A/B testing](https://sleeknote.com/features), 2026-10-09; [A/B testing: Traffic split](https://app.sleeknote.com/dashboard/), 2026-10-09; [A/B testing](https://sleeknote.com/features), 2026-10-09; [A/B testing](https://sleeknote.com/features), 2026-10-09; [A/B testing](https://sleeknote.com/features), 2026-10-09; [A/B testing](https://sleeknote.com/features), 2026-10-09; [A/B testing](https://sleeknote.com/features), 2026-10-09 |
Round score: Klaviyo +3.85 (total 17.86), Sleeknote +1.05 (total 9.89).
## Round 7: Email & SMS
Weight: 4.5 points.
Klaviyo handles native broadcasts, segmentation and flows. Sleeknote plus Klaviyo can be a useful setup, but it involves two products and two budgets. A Klaviyo signup can enter a welcome flow from a list. Flows also respond to segments, events and dates, with delays and conditional paths for later messages. Broadcasts, segmentation, email and SMS belong to the same platform; profiles and sending allowances determine the bill. Sleeknote passes contacts and answers to an email platform. That platform sends the welcome sequence, runs later campaigns and charges for its own allowance. Native email sending is not confirmed in the shared evidence.
| Criterion | Klaviyo | Sleeknote | Evidence |
| --- | --- | --- | --- |
| Email marketing | Campaigns, segments and flows; sending and profile limits depend on the plan. (+1.5) | Not confirmed | Klaviyo: [Email marketing](https://help.klaviyo.com/hc/en-us/articles/115002775172), 2026-09-29 |
| SMS marketing | (+1.5) | Not confirmed | Klaviyo: [SMS marketing](https://help.klaviyo.com/hc/en-us/articles/360035285472), 2026-09-29 |
| Web push | Not confirmed | Not confirmed | — |
Round score: Klaviyo +3 (total 20.86), Sleeknote +0 (total 9.89).
## Round 8: Team & sites
Weight: 4.5 points.
Sleeknote has a clear multi-domain offer. Klaviyo provides more detailed role and activity controls, but Portfolio should not be interpreted as an equivalent unlimited-domain popup subscription. Klaviyo provides predefined and custom roles, with separate responsibilities for content, analysis and account management. Owners and Admins can edit billing. An activity log records changes, and Portfolio groups accounts; that grouping is not a promise of one subscription for every website. Sleeknote Core includes unlimited domains and site profiles, with additional users and super users. Billing is restricted to the main owner. Capacity is shared according to the visitor-based subscription.
| Criterion | Klaviyo | Sleeknote | Evidence |
| --- | --- | --- | --- |
| Workspaces | Portfolio groups several accounts for management. (+0.84) · Workspaces: Portfolio groups several accounts for management. (+0.28) · Client portfolio: (+0.56) | (+0.84) · Workspaces: (+0.28) · Several sites: (+0.56) | Klaviyo: [Workspaces](https://www.klaviyo.com/features/portfolio), 2026-09-29; [Workspaces](https://www.klaviyo.com/features/portfolio), 2026-09-29; [Workspaces](https://www.klaviyo.com/features/portfolio), 2026-09-29; [Workspaces](https://www.klaviyo.com/features/portfolio), 2026-09-29 · Sleeknote: [Workspaces](https://sleeknote.com/pricing), 2026-09-29; [Workspaces](https://sleeknote.com/pricing), 2026-09-29; [Workspaces](https://sleeknote.com/pricing), 2026-09-29; [Workspaces](https://sleeknote.com/pricing), 2026-09-29 |
| Team | Individual user logins instead of a shared login. (+0.84) · Team: Individual user logins instead of a shared login. (+0.28) · Activity history: The activity logger lists each edit with time, user email and category. (+0.56) | (+0.28) | Klaviyo: [Team](https://help.klaviyo.com/hc/en-us/articles/115005231648), 2026-10-17; [Team: Activity history](https://help.klaviyo.com/hc/en-us/articles/44579125790747), 2026-10-17 · Sleeknote: [Team](https://help.sleeknote.com/hc/en-us/articles/6973600892829-Manage-Your-Billing-Details), 2026-09-29; [Team](https://help.sleeknote.com/hc/en-us/articles/6973600892829-Manage-Your-Billing-Details), 2026-09-29 |
| Roles | (+0.56) · Roles: (+0.28) · Billing access controls: Only Owners and Admins can edit billing. (+0.28) | (+0.56) · Roles: (+0.28) · Billing access controls: (+0.28) | Klaviyo: [Roles](https://help.klaviyo.com/hc/en-us/articles/360053547071), 2026-10-17; [Roles: Billing access controls](https://help.klaviyo.com/hc/en-us/articles/115005231648), 2026-10-17 · Sleeknote: [Roles](https://help.sleeknote.com/hc/en-us/articles/6973600892829-Manage-Your-Billing-Details), 2026-09-29; [Roles](https://help.sleeknote.com/hc/en-us/articles/6973600892829-Manage-Your-Billing-Details), 2026-09-29 |
Round score: Klaviyo +2.25 (total 23.11), Sleeknote +1.69 (total 11.58).
## Round 9: Developer
Weight: 4.5 points.
Klaviyo’s REST API can create, update and publish forms, with reporting endpoints for performance. Browser events connect forms to site code. Its MCP server exposes campaigns, flows, profiles and reporting with scope restrictions; flow webhooks send custom payloads to an endpoint. Sleeknote’s browser trigger opens an existing campaign, and Custom Integration sends submissions to an endpoint. Its read-only MCP connection exposes campaign and split-test data for external analysis.
| Criterion | Klaviyo | Sleeknote | Evidence |
| --- | --- | --- | --- |
| HTTP API | Forms, campaigns, profiles, flows and reporting, with per-key scopes. (+1.88) · HTTP API: Forms, campaigns, profiles, flows and reporting, with per-key scopes. (+0.38) · Create designs: The Forms API creates and updates forms with full step, block and trigger definitions. (+0.38) · Operate campaigns: Forms can be published and unpublished through the API. (+0.38) · Read performance: The Reporting API returns form values and series. (+0.38) · Scoped credentials: Private API keys can be limited with scopes. (+0.38) | Not confirmed | Klaviyo: [HTTP API](https://developers.klaviyo.com/en/reference/forms_api_overview), 2026-10-17; [HTTP API: Create designs](https://developers.klaviyo.com/en/reference/forms_api_overview), 2026-10-17; [HTTP API: Operate campaigns](https://developers.klaviyo.com/en/reference/forms_api_overview), 2026-10-17; [HTTP API: Read performance](https://developers.klaviyo.com/en/reference/forms_api_overview), 2026-10-17; [HTTP API: Scoped credentials](https://developers.klaviyo.com/en/reference/api_overview), 2026-10-17 |
| Browser API | (+0.19) | (+0.19) | Klaviyo: [Browser API](https://developers.klaviyo.com/en/docs/introduction_to_the_klaviyo_object), 2026-10-17 · Sleeknote: [Browser API](https://app.sleeknote.com/dashboard/), 2026-10-09 |
| Webhooks | Not confirmed | (+0.38) | Klaviyo: [Webhooks](https://help.klaviyo.com/hc/en-us/articles/4534329515931), 2026-10-17 · Sleeknote: [Webhooks](https://app.sleeknote.com/dashboard/), 2026-10-09 |
| MCP server | (+0.94) · MCP server: (+0.19) · Create designs: The MCP server has a tool to create forms. (+0.38) · Read performance: (+0.19) · Scoped credentials: Setting read-only=true disables every tool that writes to the account. (+0.19) | (+0.56) · MCP server: (+0.19) · Read performance: (+0.19) · Scoped credentials: (+0.19) | Klaviyo: [MCP server](https://developers.klaviyo.com/en/docs/connect_to_the_klaviyo_mcp_server), 2026-10-17; [MCP server: Create designs](https://developers.klaviyo.com/en/docs/klaviyo_mcp_server_available_tools), 2026-10-17; [MCP server](https://developers.klaviyo.com/en/docs/connect_to_the_klaviyo_mcp_server), 2026-10-17; [MCP server](https://developers.klaviyo.com/en/docs/connect_to_the_klaviyo_mcp_server), 2026-10-17; [MCP server: Scoped credentials](https://developers.klaviyo.com/en/docs/connect_to_the_klaviyo_mcp_server), 2026-10-17 · Sleeknote: [MCP server](https://help.sleeknote.com/hc/en-us/articles/39735134034461-What-you-can-do-with-the-Sleeknote-MCP), 2026-10-09; [MCP server](https://help.sleeknote.com/hc/en-us/articles/39735134034461-What-you-can-do-with-the-Sleeknote-MCP), 2026-10-09; [MCP server](https://help.sleeknote.com/hc/en-us/articles/39735134034461-What-you-can-do-with-the-Sleeknote-MCP), 2026-10-09; [MCP server](https://help.sleeknote.com/hc/en-us/articles/39735134034461-What-you-can-do-with-the-Sleeknote-MCP), 2026-10-09; [MCP server](https://help.sleeknote.com/hc/en-us/articles/39735134034461-What-you-can-do-with-the-Sleeknote-MCP), 2026-10-09 |
Round score: Klaviyo +3 (total 26.11), Sleeknote +1.13 (total 12.71).
## Round 10: Support
Weight: 1.8 points.
Both meet the direct-support criterion. Sleeknote also lists phone support, while Klaviyo’s free email support has a 60-day limit. Klaviyo’s paid plans include email and live chat support, with availability depending on the plan and day. Free accounts receive email support for the first 60 days, then rely on self-service and AI-assisted help. Sleeknote lists phone, chat and email support in Core and Core + Gamification.
| Criterion | Klaviyo | Sleeknote | Evidence |
| --- | --- | --- | --- |
| Chat support | Live chat on paid plans; Free gets 60 days of email support. (+0.9) | (+0.9) | Klaviyo: [Chat support](https://help.klaviyo.com/hc/en-us/articles/115001002272), 2026-10-17 · Sleeknote: [Chat support](https://sleeknote.com/pricing), 2026-09-29 |
Round score: Klaviyo +0.9 (total 27.01), Sleeknote +0.9 (total 13.61).
## Round 11: Editor & workflow
Weight: 5.4 points.
Klaviyo includes the form editor on Free. Draft, Live and Editing statuses separate work in progress from the form visitors see. Sleeknote lets you save campaigns separately from activation and edit desktop and mobile designs. Editor access starts with a 14-day trial rather than an ongoing free plan.
| Criterion | Klaviyo | Sleeknote | Evidence |
| --- | --- | --- | --- |
| Free editor | (+0.77) | No | Klaviyo: [Free editor](https://www.klaviyo.com/pricing), 2026-10-17 · Sleeknote: [Free editor](https://sleeknote.com/pricing/), 2026-10-19 |
| Campaign drafts | Draft, Live and Editing statuses; a draft is not live. (+0.39) | Save a campaign separately from activating it. (+0.39) | Klaviyo: [Campaign drafts](https://help.klaviyo.com/hc/en-us/articles/360002049952), 2026-10-17 · Sleeknote: [Campaign drafts](https://app.sleeknote.com/dashboard/), 2026-10-09 |
| Saved versions | Not confirmed | Not confirmed | — |
| AI popup assistant | Not confirmed | Not confirmed | — |
Round score: Klaviyo +1.16 (total 28.16), Sleeknote +0.39 (total 13.99).
## Round 12: Data & reporting
Weight: 4.5 points.
Both export data and measure campaign outcomes. Klaviyo also has confirmed scheduled reporting; Sleeknote’s read-only MCP is convenient for asking questions about onsite campaigns. Klaviyo reports submissions and revenue following form interactions, including revenue by test variation. Submitters can be grouped into a segment and exported. Custom reports can run on weekly or monthly schedules, and reporting APIs support external analysis. Sleeknote reports views, leads and conversion rates by device, source and location. Shopify adds purchase and revenue tracking. Leads and quiz answers can be downloaded, and MCP exposes campaign and split-test results.
| Criterion | Klaviyo | Sleeknote | Evidence |
| --- | --- | --- | --- |
| Field mapping | Not confirmed | Map quiz answer values and question names to destination fields. (+0.64) | Sleeknote: [Field mapping](https://help.sleeknote.com/quiz#outcome-logic-setup), 2026-10-09 |
| Lead export | Build a segment of form submitters and export it to CSV. (+0.32) | Download collected leads and quiz answers as CSV. (+0.32) | Klaviyo: [Lead export](https://help.klaviyo.com/hc/en-us/articles/4406228129051), 2026-10-17 · Sleeknote: [Lead export](https://help.sleeknote.com/quiz#outcome-logic-setup), 2026-10-09 |
| Scheduled reports | Weekly or monthly custom reports, sent as a download link. (+0.64) | Not confirmed | Klaviyo: [Scheduled reports](https://help.klaviyo.com/hc/en-us/articles/4407838420123), 2026-10-17 |
| Revenue goals | Revenue from orders after a form interaction, also per A/B variation. (+0.32) | Track purchases and revenue through the Shopify integration. (+0.32) | Klaviyo: [Revenue goals](https://help.klaviyo.com/hc/en-us/articles/360015960712), 2026-10-17 · Sleeknote: [Revenue goals](https://help.sleeknote.com/hc/en-us/articles/39215006593693-Set-Up-Custom-Revenue-Tracking), 2026-10-06 |
| Team notifications | Not confirmed | Not confirmed | — |
Round score: Klaviyo +1.29 (total 29.45), Sleeknote +1.29 (total 15.28).
## Round 13: Integrations
Weight: 4.5 points.
Use Klaviyo alone when its forms meet the brief. Add Sleeknote when the onsite campaign needs its quiz, game or mobile controls, then map the answers into the profiles that your existing flows use. Klaviyo stores signups in its own profiles and sends its own email and SMS. Its marketplace connects stores, CRMs, review and loyalty systems, advertising tools and automation services. A flow can POST a webhook payload; that route is different from a dedicated form-submission webhook. Sleeknote connects to Klaviyo, other email providers, HubSpot, Salesforce, Google Analytics, Segment and Zapier. Its custom integration supports POST, JSON POST or GET and optional Basic Authentication. Quiz answers can carry destination field names and values.
| Criterion | Klaviyo | Sleeknote | Evidence |
| --- | --- | --- | --- |
| Email | Not confirmed | Mailchimp, ActiveCampaign, Campaign Monitor, Drip, CleverReach, Rule.io, Peytz Mail, Voyado, Agillic, Apsis, Apsis One, Dotdigital, MarketingPlatform, Ubivox, SmartWeb, HeyLoyalty, Marketing Cloud, Emarsys: Connect captured leads to the listed destination. Klaviyo: Choose a Klaviyo list, map campaign inputs and enter exact custom-property names. Additional options send custom data; multistep campaigns are supported. (+0.25) | Sleeknote: [Integration catalogue](https://sleeknote.com/integrations/), 2026-10-22; [Klaviyo setup](https://help.sleeknote.com/hc/en-us/articles/6973565622173-Klaviyo), 2026-10-22 |
| SMS | Not confirmed | Not confirmed | — |
| CRM | Salesforce, Zoho, Pipedrive, Microsoft Dynamics: Sync leads and custom properties with CRM platforms. HubSpot: A HubSpot route is listed in the integration marketplace. Check the individual connector’s direction, partner subscription and supported properties before using it to deliver signup-form leads. (+0.13) | HubSpot, Salesforce: Connect captured leads to the listed destination. (+0.13) | Klaviyo: [Integration catalogue](https://www.klaviyo.com/integrate), 2026-10-17; [How connections work](https://help.klaviyo.com/hc/en-us/articles/16741902158491), 2026-10-17; [Sync schedules](https://help.klaviyo.com/hc/en-us/articles/115005253208), 2026-10-17; [Developer documentation](https://developers.klaviyo.com/), 2026-10-17; [Klaviyo Marketplace](https://marketplace.klaviyo.com/en-us/browse/crm), 2026-10-17 · Sleeknote: [Integration catalogue](https://sleeknote.com/integrations/), 2026-10-22; [Klaviyo setup](https://help.sleeknote.com/hc/en-us/articles/6973565622173-Klaviyo), 2026-10-22 |
| Messaging | Not confirmed | Not confirmed | — |
| Customer lifecycle | Gorgias, Recharge, Zendesk, Intercom, Smile, LoyaltyLion, Yotpo, Stamped: Klaviyo and partner-built apps supply additional customer events. These are wider-platform connections, not all popup-specific. (+0.25) | Not confirmed | Klaviyo: [Integration catalogue](https://www.klaviyo.com/integrate), 2026-10-17; [How connections work](https://help.klaviyo.com/hc/en-us/articles/16741902158491), 2026-10-17; [Sync schedules](https://help.klaviyo.com/hc/en-us/articles/115005253208), 2026-10-17; [Developer documentation](https://developers.klaviyo.com/), 2026-10-17; [Klaviyo Marketplace](https://marketplace.klaviyo.com/en-us/browse/crm), 2026-10-17 |
| Analytics | Not confirmed | Google Analytics, Segment: Connect campaign data to your analytics stack. (+0.25) | Sleeknote: [Integration catalogue](https://sleeknote.com/integrations/), 2026-10-22; [Klaviyo setup](https://help.sleeknote.com/hc/en-us/articles/6973565622173-Klaviyo), 2026-10-22 |
| Advertising | Meta Advertising, TikTok Advertising, Google Ads, Pinterest, Snapchat: Sync audiences and events with advertising platforms. (+0.25) | Not confirmed | Klaviyo: [Integration catalogue](https://www.klaviyo.com/integrate), 2026-10-17; [How connections work](https://help.klaviyo.com/hc/en-us/articles/16741902158491), 2026-10-17; [Sync schedules](https://help.klaviyo.com/hc/en-us/articles/115005253208), 2026-10-17; [Developer documentation](https://developers.klaviyo.com/), 2026-10-17; [Klaviyo Marketplace](https://marketplace.klaviyo.com/en-us/browse/crm), 2026-10-17 |
| Marketing tools | Not confirmed | Not confirmed | — |
| Store | Shopify, WooCommerce, BigCommerce, Adobe Commerce, PrestaShop, Salesforce Commerce Cloud, Wix: Bring store customer and order data into Klaviyo. Supported data and sync frequency differ by platform. (+0.25) | Not confirmed | Klaviyo: [Integration catalogue](https://www.klaviyo.com/integrate), 2026-10-17; [How connections work](https://help.klaviyo.com/hc/en-us/articles/16741902158491), 2026-10-17; [Sync schedules](https://help.klaviyo.com/hc/en-us/articles/115005253208), 2026-10-17; [Developer documentation](https://developers.klaviyo.com/), 2026-10-17; [Klaviyo Marketplace](https://marketplace.klaviyo.com/en-us/browse/crm), 2026-10-17 |
| Product recommendations | Not confirmed | Clerk, Hello Retail, Raptor, Shopify, Relewise: Connect a recommendation service to campaigns. (+0.25) | Sleeknote: [Integration catalogue](https://sleeknote.com/integrations/), 2026-10-22; [Klaviyo setup](https://help.sleeknote.com/hc/en-us/articles/6973565622173-Klaviyo), 2026-10-22 |
| Personalization | Not confirmed | Not confirmed | — |
| Reviews | Judge.me, Loox, Okendo, REVIEWS.io, Junip: Bring review events and data into segments and flows. (+0.25) | Not confirmed | Klaviyo: [Integration catalogue](https://www.klaviyo.com/integrate), 2026-10-17; [How connections work](https://help.klaviyo.com/hc/en-us/articles/16741902158491), 2026-10-17; [Sync schedules](https://help.klaviyo.com/hc/en-us/articles/115005253208), 2026-10-17; [Developer documentation](https://developers.klaviyo.com/), 2026-10-17; [Klaviyo Marketplace](https://marketplace.klaviyo.com/en-us/browse/crm), 2026-10-17 |
| Content | Not confirmed | Not confirmed | — |
| Custom forms | Not confirmed | Not confirmed | — |
| Data & validation | Not confirmed | Not confirmed | — |
| Spreadsheets | Not confirmed | Not confirmed | — |
| Automation | Shopify Flow, Zapier: Connect Shopify Flow and Zapier workflows to Klaviyo. (+0.13) | Zapier: Route submissions to additional destinations. (+0.13) | Klaviyo: [Integration catalogue](https://www.klaviyo.com/integrate), 2026-10-17; [How connections work](https://help.klaviyo.com/hc/en-us/articles/16741902158491), 2026-10-17; [Sync schedules](https://help.klaviyo.com/hc/en-us/articles/115005253208), 2026-10-17; [Developer documentation](https://developers.klaviyo.com/), 2026-10-17; [Klaviyo Marketplace](https://marketplace.klaviyo.com/en-us/browse/crm), 2026-10-17 · Sleeknote: [Integration catalogue](https://sleeknote.com/integrations/), 2026-10-22; [Klaviyo setup](https://help.sleeknote.com/hc/en-us/articles/6973565622173-Klaviyo), 2026-10-22 |
| Custom connections | REST API, SDKs, Webhooks: Build a custom connection for profiles, events and other supported resources; flows can call a webhook. (+0.13) | Custom Integration: Send submissions to an endpoint using POST, POST as JSON or GET. The editor also offers Basic Authentication. (+0.13) | Klaviyo: [Integration catalogue](https://www.klaviyo.com/integrate), 2026-10-17; [How connections work](https://help.klaviyo.com/hc/en-us/articles/16741902158491), 2026-10-17; [Sync schedules](https://help.klaviyo.com/hc/en-us/articles/115005253208), 2026-10-17; [Developer documentation](https://developers.klaviyo.com/), 2026-10-17; [Klaviyo Marketplace](https://marketplace.klaviyo.com/en-us/browse/crm), 2026-10-17 · Sleeknote: [Integration catalogue](https://sleeknote.com/integrations/), 2026-10-22; [Klaviyo setup](https://help.sleeknote.com/hc/en-us/articles/6973565622173-Klaviyo), 2026-10-22 |
Round score: Klaviyo +1.38 (total 30.82), Sleeknote +1.13 (total 16.4).
## Round 14: Shopify
Weight: 12.6 points.
Klaviyo’s documented customer, order and coupon operations give it the higher shared score. Sleeknote adds onsite recommendations and can pass the resulting subscriber data into Klaviyo rather than replacing it. Klaviyo connects Shopify customers, products, orders and events to profiles and flows. Forms can target cart conditions and customer segments, including tags and order history. Unique Shopify coupons support signup incentives and automatic application at checkout; product data also powers follow-up emails. Sleeknote’s Shopify app sends subscribers to Shopify and supplies purchase and revenue tracking. Shopify is also a product-recommendation connection. Coupon lists distribute codes, including rewards from game campaigns.
| Criterion | Klaviyo | Sleeknote | Evidence |
| --- | --- | --- | --- |
| Storefront installation | A native Shopify app is available. (+0.39) | Activate the app block in your Shopify theme after installing the app. (+0.39) | Klaviyo: [Shopify evidence](https://apps.shopify.com/klaviyo-email-marketing), 2026-10-01 · Sleeknote: [Shopify evidence](https://help.sleeknote.com/hc/en-us/articles/28256300881821-Shopify-App), 2026-10-06 |
| Native Shopify app | A native app is available in the Shopify App Store. (+0.39) | Manage the native Sleeknote app inside Shopify. (+0.39) | Klaviyo: [Shopify evidence](https://apps.shopify.com/klaviyo-email-marketing), 2026-10-01 · Sleeknote: [Shopify evidence](https://help.sleeknote.com/hc/en-us/articles/28256300881821-Shopify-App), 2026-10-06 |
| Built for Shopify | No | No | Klaviyo: [App website](https://apps.shopify.com/klaviyo-email-marketing), 2026-10-13 · Sleeknote: [App website](https://help.sleeknote.com/hc/en-us/articles/28256300881821-Shopify-App), 2026-10-13 |
| Shopify media assets | Not confirmed | Not confirmed | — |
| Shopify products and variants | Not confirmed | Not confirmed | — |
| Shopify collections | Not confirmed | Not confirmed | — |
| Shopify discount assets | Klaviyo generates unique Shopify discount codes for forms and flows, and records discount codes used on orders. (+0.79) | Not confirmed | Klaviyo: [Form coupons](https://help.klaviyo.com/hc/en-us/articles/6038674938523), 2026-10-17 |
| Shopify metafields and metaobjects | Not confirmed | Not confirmed | — |
| Shopify customer data | Bring Shopify customer and order data into Klaviyo. (+0.79) | Not confirmed | Klaviyo: [Shopify evidence](https://help.klaviyo.com/hc/en-us/articles/16741902158491), 2026-10-05 |
| Shopify customer synchronization | Customers and consent sync from Shopify into Klaviyo, and an optional setting syncs profile data and subscription status from Klaviyo back to Shopify. (+0.39) | Automatically send subscribers to Shopify. (+0.39) | Klaviyo: [Klaviyo for Shopify](https://help.klaviyo.com/hc/en-us/articles/115005080407), 2026-10-17; [Shopify evidence](https://help.klaviyo.com/hc/en-us/articles/16741902158491), 2026-10-05 · Sleeknote: [Shopify evidence](https://help.sleeknote.com/hc/en-us/articles/28256300881821-Shopify-App), 2026-10-06 |
| Shopify events and triggers | Klaviyo tracks Shopify Added to Cart, Checkout Started and Placed Order events, usable as flow triggers and segment conditions. (+0.39) | Track purchases and revenue through the Shopify app without separate custom purchase-event setup. (+0.39) | Klaviyo: [Shopify data in Klaviyo](https://help.klaviyo.com/hc/en-us/articles/115005080447), 2026-10-17 · Sleeknote: [Shopify evidence](https://help.sleeknote.com/hc/en-us/articles/39215006593693-Set-Up-Custom-Revenue-Tracking), 2026-10-06 |
| Shopify audience and cart targeting | Forms can target Shopify cart value and products, and lists or segments built from Shopify customer and order data. (+0.79) | Not confirmed | Klaviyo: [Form targeting](https://help.klaviyo.com/hc/en-us/articles/4413544555547), 2026-10-17 |
| Apply a Shopify discount | A Shopify unique coupon created through a form is applied automatically to the customer's cart at checkout. (+0.79) | Not confirmed | Klaviyo: [Form coupons](https://help.klaviyo.com/hc/en-us/articles/6038674938523), 2026-10-17 |
| Add a Shopify product to cart | Not confirmed | Not confirmed | — |
| Buy now / direct checkout | Not confirmed | Not confirmed | — |
| Shopify Flow | Not confirmed | Not confirmed | — |
Round score: Klaviyo +4.72 (total 35.55), Sleeknote +1.57 (total 17.98).
## Round 15: Pricing
Weight: 10 points.
Klaviyo is cheaper in most shared scenarios, while Sleeknote supplies a confirmed multi-domain subscription. The table converts Sleeknote’s euro prices using the existing fixed ECB reference rate of €1 = $1.1225 dated October 19, 2026. It does not add an external email bill to a same-product quote.
Klaviyo charges for active profiles and email volume rather than pageviews. Free covers 250 profiles and 500 monthly emails. The first paid email tier costs $20 for up to 500 profiles and 5,000 emails; removing form branding requires paid access. SMS has separate pricing. Sleeknote Core costs €62 a month for up to 25,000 visitors and €74 for up to 50,000, with unlimited domains. Core + Gamification starts at €85 a month. A connected email provider is an additional cost.
| Criterion | Klaviyo | Sleeknote | Evidence |
| --- | --- | --- | --- |
| A small website (visitors / mo: 1,000, pageviews / mo: 2,000, website: 1) | $0 / mo · Free. Klaviyo bills active profiles and email sends, not pageviews, so form traffic alone fits the Free plan. (+1) | $69.6 / mo · Core · 25,000 visitors. The visitor count fits this Core bracket. €62/month × 1.1225 USD/EUR (ECB, October 19, 2026), rounded to cents. (+0) | Klaviyo: [Klaviyo pricing](https://www.klaviyo.com/pricing), 2026-10-17 · Sleeknote: [Sleeknote pricing](https://sleeknote.com/pricing/), 2026-10-20; [ECB EUR/USD · October 19, 2026](https://www.ecb.europa.eu/stats/policy_and_exchange_rates/euro_reference_exchange_rates/html/eurofxref-graph-usd.en.html), 2026-10-20 |
| Visitors explore more pages (visitors / mo: 10,000, pageviews / mo: 60,000, website: 1) | $0 / mo · Free. Klaviyo bills active profiles and email sends, not pageviews, so form traffic alone fits the Free plan. (+1) | $69.6 / mo · Core · 25,000 visitors. The visitor count fits this Core bracket. €62/month × 1.1225 USD/EUR (ECB, October 19, 2026), rounded to cents. (+0) | Klaviyo: [Klaviyo pricing](https://www.klaviyo.com/pricing), 2026-10-17 · Sleeknote: [Sleeknote pricing](https://sleeknote.com/pricing/), 2026-10-20; [ECB EUR/USD · October 19, 2026](https://www.ecb.europa.eu/stats/policy_and_exchange_rates/euro_reference_exchange_rates/html/eurofxref-graph-usd.en.html), 2026-10-20 |
| A higher-traffic website (visitors / mo: 50,000, pageviews / mo: 100,000, website: 1) | $0 / mo · Free. Klaviyo bills active profiles and email sends, not pageviews, so form traffic alone fits the Free plan. (+1) | $83.07 / mo · Core · 50,000 visitors. The visitor count fits this Core bracket. €74/month × 1.1225 USD/EUR (ECB, October 19, 2026), rounded to cents. (+0) | Klaviyo: [Klaviyo pricing](https://www.klaviyo.com/pricing), 2026-10-17 · Sleeknote: [Sleeknote pricing](https://sleeknote.com/pricing/), 2026-10-20; [ECB EUR/USD · October 19, 2026](https://www.ecb.europa.eu/stats/policy_and_exchange_rates/euro_reference_exchange_rates/html/eurofxref-graph-usd.en.html), 2026-10-20 |
| Two websites on one account (visitors / mo: 10,000 total, pageviews / mo: 20,000 total, websites: 2) | Not confirmed | $69.6 / mo · Core · 25,000 visitors. Unlimited domains cover both sites. €62/month × 1.1225 USD/EUR (ECB, October 19, 2026), rounded to cents. (+1) | Sleeknote: [Sleeknote pricing](https://sleeknote.com/pricing/), 2026-10-20; [ECB EUR/USD · October 19, 2026](https://www.ecb.europa.eu/stats/policy_and_exchange_rates/euro_reference_exchange_rates/html/eurofxref-graph-usd.en.html), 2026-10-20 |
| Launch popups without vendor branding (visitors / mo: 1,000, pageviews / mo: 2,000, website: 1) | $20 / mo · Email · 251–500 contacts. Removing Klaviyo branding from forms needs a paid plan; the first email tier covers up to 500 profiles. (+0.78) | $69.6 / mo · Core · 25,000 visitors. Core includes branding removal. €62/month × 1.1225 USD/EUR (ECB, October 19, 2026), rounded to cents. (+0.22) | Klaviyo: [Klaviyo Shopify app](https://apps.shopify.com/klaviyo-email-marketing), 2026-10-17 · Sleeknote: [Sleeknote pricing](https://sleeknote.com/pricing/), 2026-10-20; [ECB EUR/USD · October 19, 2026](https://www.ecb.europa.eu/stats/policy_and_exchange_rates/euro_reference_exchange_rates/html/eurofxref-graph-usd.en.html), 2026-10-20 |
| Run a sale or promotion (visitors / mo: 1,000, pageviews / mo: 2,000, website: 1) | $20 / mo · Email · 251–500 contacts. Forms with a coupon work on Free, but 500 contacts exceed its 250-profile limit; the first email tier covers them. (+0.78) | $69.6 / mo · Core · 25,000 visitors. Core supports offer links and coupon presentation. €62/month × 1.1225 USD/EUR (ECB, October 19, 2026), rounded to cents. (+0.22) | Klaviyo: [Klaviyo Shopify app](https://apps.shopify.com/klaviyo-email-marketing), 2026-10-17 · Sleeknote: [Sleeknote pricing](https://sleeknote.com/pricing/), 2026-10-20; [ECB EUR/USD · October 19, 2026](https://www.ecb.europa.eu/stats/policy_and_exchange_rates/euro_reference_exchange_rates/html/eurofxref-graph-usd.en.html), 2026-10-20 |
| Improve popup conversion with A/B testing (visitors / mo: 1,000, pageviews / mo: 2,000, website: 1) | $0 / mo · Free. Form A/B tests are available on Free, and 250 contacts fit its limit. (+1) | $69.6 / mo · Core · 25,000 visitors. Core includes popup A/B testing. €62/month × 1.1225 USD/EUR (ECB, October 19, 2026), rounded to cents. (+0) | Klaviyo: [Klaviyo pricing](https://www.klaviyo.com/pricing), 2026-10-17 · Sleeknote: [Sleeknote pricing](https://sleeknote.com/pricing/), 2026-10-20; [ECB EUR/USD · October 19, 2026](https://www.ecb.europa.eu/stats/policy_and_exchange_rates/euro_reference_exchange_rates/html/eurofxref-graph-usd.en.html), 2026-10-20 |
| Collect data and feedback with surveys, quizzes and forms (visitors / mo: 1,000, pageviews / mo: 2,000, website: 1) | $0 / mo · Free. Forms with text and choice fields are available on Free within its 250-profile limit. (+1) | $69.6 / mo · Core · 25,000 visitors. Core text and choice fields satisfy basic feedback collection; the Gamification package is not required. €62/month × 1.1225 USD/EUR (ECB, October 19, 2026), rounded to cents. (+0) | Klaviyo: [Klaviyo pricing](https://www.klaviyo.com/pricing), 2026-10-17 · Sleeknote: [Sleeknote pricing](https://sleeknote.com/pricing/), 2026-10-20; [ECB EUR/USD · October 19, 2026](https://www.ecb.europa.eu/stats/policy_and_exchange_rates/euro_reference_exchange_rates/html/eurofxref-graph-usd.en.html), 2026-10-20 |
| Signup plus an automated welcome email (visitors / mo: 1,000, pageviews / mo: 2,000, website: 1, active contacts: 500, emails / mo: 1,000) | $20 / mo · Email · 251–500 contacts. Welcome flows are native; 500 active profiles exceed Free, and the first email tier allows 5,000 sends a month. (+1) | Not confirmed | Klaviyo: [Klaviyo Shopify app](https://apps.shopify.com/klaviyo-email-marketing), 2026-10-17 |
| Popups and email marketing in one platform (visitors / mo: 5,000, pageviews / mo: 10,000, website: 1, active contacts: 500, emails / mo: 5,000) | $20 / mo · Email · 251–500 contacts. Campaigns, segments and flows are included; the 500-profile tier allows 5,000 emails a month. (+1) | Not confirmed | Klaviyo: [Klaviyo Shopify app](https://apps.shopify.com/klaviyo-email-marketing), 2026-10-17 |
Round score: Klaviyo +8.55 (total 44.1), Sleeknote +1.45 (total 19.43).
## The final score
Klaviyo leads overall, with its largest advantages in pricing, forms, and shopify. Sleeknote scores higher in gamification and surveys. The priority scores below show how the result changes with the work you value most.
| Round | Klaviyo | Sleeknote |
| --- | --- | --- |
| Formats & content | 2.63 | 1.13 |
| Forms | 5.49 | 1.94 |
| Surveys | 0 | 0.82 |
| Gamification | 0.26 | 1.59 |
| Targeting | 5.62 | 3.38 |
| Experiments | 3.85 | 1.05 |
| Email & SMS | 3 | 0 |
| Team & sites | 2.25 | 1.69 |
| Developer | 3 | 1.13 |
| Support | 0.9 | 0.9 |
| Editor & workflow | 1.16 | 0.39 |
| Data & reporting | 1.29 | 1.29 |
| Integrations | 1.38 | 1.13 |
| Shopify | 4.72 | 1.57 |
| Pricing | 8.55 | 1.45 |
| Total | 44.1 | 19.43 |
## What matters most to you?
First, check that each tool can do the task. An absent or unconfirmed required capability means a dash with an explanation instead of a scenario score, and no winner highlight. Only qualifying tools share the points; a sole qualifier earns the full weight of each criterion it meets. 70 points go to the criteria directly related to it, and 30 to everything else. For “Popups without email marketing”, all 100 points go to the included capabilities and relevant popup pricing scenarios; unwanted features and email sending have zero weight. Both tools earn points for confirmed capabilities; unconfirmed ones earn zero. The first row keeps the original overall score.
| What matters to me | Klaviyo | Sleeknote |
| --- | --- | --- |
| The overall feature set | 44.1 | 19.43 |
| Popups without email marketing | 43.51 | 20.4 |
| Collecting more leads | 44.5 | 21.56 |
| Popups and email marketing in one service | 59.77 | — · Required capability unconfirmed |
| Running campaigns for my Shopify store | 39.77 | 14.88 |
| A/B testing and measuring results | 46.39 | 20.89 |
| Creating and editing campaigns with AI | — · Required capability unconfirmed | — · Required capability unconfirmed |
| Collecting data and feedback | 36.46 | 17.32 |
| Working with a team or managing clients | 48.15 | 31.82 |
| Connecting AI agents to my workflow | 59.58 | 23.25 |
## How the comparison works
These scores are relative to Klaviyo and Sleeknote in this comparison. They cannot be carried over to comparisons with other products: each tool’s points depend on what the other participant offers.
1. **Relative scores, not universal ratings.** The same capability earns half the points when both tools have it, and all the points when only one does. Changing the opponent can therefore change a product’s score without changing the product itself. The review pages separately show absolute capability ratings without price.
2. **One shared pool of 100 points.** The 15 rounds cover 194 criteria. Each round has a set weight, divided equally among its criteria. These weights are our editorial choices.
3. **How features earn points.** If both products meet a criterion, they split its points equally. If only one does, it earns all of them. An unconfirmed capability earns zero. If neither qualifies, those points are not awarded, so the two totals can add up to less than 100.
4. **How prices earn points.** Ten scenarios carry 1 point each. We use the cheapest confirmed plan meeting each scenario’s traffic and feature requirements, billed monthly in USD. Equal prices split the point; a plan costing half as much earns twice the share. A free qualifying plan beats a paid one. If only one suitable plan and price are confirmed, it earns the full point.
5. **Which plans count.** Feature rounds cover capabilities across the products’ plans. The total does not describe a single subscription; the pricing scenarios identify the plan needed for each stated use case.
6. **How your priorities change the score.** A tool must first meet the task’s required capabilities. If a requirement is absent or unconfirmed, its scenario score is shown as a dash and it cannot be the winner; the status explains why. Only qualifying tools participate in point allocation and price comparisons. A sole qualifying tool earns the full weight of each criterion it meets; criteria it does not meet remain unearned. Standard priorities assign 70 points to their relevant criteria and 30 to the rest, preserving relative weights within each group. “Popups without email marketing” instead distributes all 100 points among its included criteria, preserving their relative weights and giving everything else zero. It includes lead capture, testing, reporting and external handoff. Its pricing criteria exclude email sending and feedback workloads. Included email features carry no penalty: only the required plan price counts. The evidence and scoring rules stay the same. The overall-feature row keeps the original weights.
## See also
- [Klaviyo vs OptiMonk](https://popuppapa.com/klaviyo-vs-optimonk/index.md): Compare Klaviyo’s built-in forms with another campaign toolkit, including the features and costs that change the choice.
- [Popup tools for Klaviyo](https://popuppapa.com/klaviyo-popup-integrations/index.md): Keep Klaviyo for follow-up while comparing external popup routes for lists, properties, consent and rewards.
- [Shopify popup apps](https://popuppapa.com/shopify-popup-apps/index.md): Compare the store data, coupon operations and cart actions behind an app installation.