# Omnisend vs Klaviyo – Where should the next customer message come from?
Compare Omnisend and Klaviyo for popup signup, store-triggered email, SMS consent, forms testing, account roles and the cost of an ecommerce sending month.
- Page: https://popuppapa.com/omnisend-vs-klaviyo/
- Published: 2026-11-05; updated: 2026-11-05
- Omnisend review: https://popuppapa.com/reviews/omnisend/index.md
- Klaviyo review: https://popuppapa.com/reviews/klaviyo/index.md
## What do you need your website to do next?
At nine in the morning a shopper leaves a cart. At noon they buy through another visit. The most important feature in the afternoon reminder is the ability to stop it. Both platforms combine store events, customer profiles and messaging; a credible comparison follows one person through the whole day.
For an existing customer of either service, a form-only trial is a smaller purchase than moving a sending account. For a whole-program decision, rebuild the welcome sequence, recovery exclusion and unsubscribe route, then quote the same active audience, email volume and SMS destinations.
## How the comparison works
15 rounds compare both platforms against the same 196 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.
Omnisend provides popup, flyout, fullscreen and embedded signup forms. A promotional message can send shoppers to a sale without adding them to a subscriber list. Compare the format used on the live placement. Klaviyo focuses its onsite editor on signup forms, including popup, flyout and embedded layouts. Mobile settings adapt the signup experience to smaller screens.
| Criterion | Omnisend | Klaviyo | Evidence |
| --- | --- | --- | --- |
| Message | Not confirmed | Not confirmed | Omnisend: [Message](https://support.omnisend.com/en/articles/6220589-popup-form-promotion-type), 2026-09-30 · Klaviyo: [Message](https://www.klaviyo.com/uk/features/web-forms), 2026-09-30 |
| Flyby / slide-in | Not confirmed | (+0.64) | Klaviyo: [Flyby / slide-in](https://help.klaviyo.com/hc/en-us/articles/360026474752), 2026-10-17 |
| Promo bars | Not confirmed | (+0.64) | Klaviyo: [Promo bars](https://help.klaviyo.com/hc/en-us/articles/360026474752), 2026-10-17 |
| Teasers | Not confirmed | (+0.64) | Klaviyo: [Teasers](https://help.klaviyo.com/hc/en-us/articles/4411540984859), 2026-10-17 |
| Content carousel | Not confirmed | Not confirmed | — |
| Eye-catching | Not confirmed | Not confirmed | — |
| Countdown | Not confirmed | (+0.64) | Klaviyo: [Countdown](https://help.klaviyo.com/hc/en-us/articles/360026474752), 2026-09-29 |
| Button link | (+0.32) | (+0.32) | Omnisend: [Button link](https://support.omnisend.com/en/articles/6305857-create-a-popup-signup-form), 2026-10-26 · Klaviyo: [Button link](https://help.klaviyo.com/hc/en-us/articles/4413550187035), 2026-10-26 |
| Copy coupon | Not confirmed | Not confirmed | — |
| Dynamic text | Not confirmed | Not confirmed | — |
| Mobile editor | Not confirmed | Desktop and mobile views, with flyout position and device-specific blocks. (+0.64) | Klaviyo: [Mobile editor](https://help.klaviyo.com/hc/en-us/articles/4406161800987), 2026-10-17 |
Round score: Omnisend +0.32 (total 0.32), Klaviyo +3.54 (total 3.54).
## Round 2: Forms
Weight: 12.6 points.
Omnisend supports multi-step collection across up to four screens and double opt-in. Test a customer who consents to email and skips SMS so that the two channels retain separate statuses. 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.
| Criterion | Omnisend | Klaviyo | Evidence |
| --- | --- | --- | --- |
| Email capture | (+0.16) | Subscribers go straight to Klaviyo's own contact lists. (+0.16) | Omnisend: [Email capture](https://support.omnisend.com/en/articles/6305857-create-a-popup-signup-form), 2026-09-29 · Klaviyo: [Email capture](https://help.klaviyo.com/hc/en-us/articles/115005076767), 2026-09-29 |
| SMS capture | (+0.16) | (+0.16) | Omnisend: [SMS capture](https://support.omnisend.com/en/articles/3529761-understand-sms-opt-in-methods), 2026-10-08 · Klaviyo: [SMS capture](https://help.klaviyo.com/hc/en-us/articles/9351341171995), 2026-10-08 |
| Phone field | Not confirmed | Phone numbers are checked for format. (+0.32) | Klaviyo: [Phone field](https://help.klaviyo.com/hc/en-us/articles/4413550187035), 2026-10-17 |
| Single choice | Not confirmed | Radio buttons or a dropdown. (+0.32) | Klaviyo: [Single choice](https://help.klaviyo.com/hc/en-us/articles/4413550187035), 2026-10-17 |
| Multiple choice | Not confirmed | (+0.32) | Klaviyo: [Multiple choice](https://help.klaviyo.com/hc/en-us/articles/4413550187035), 2026-10-17 |
| Free text | Not confirmed | Text inputs for names or open comments. (+0.32) | Klaviyo: [Free text](https://help.klaviyo.com/hc/en-us/articles/4413550187035), 2026-10-17 |
| Consent checkbox | Not confirmed | (+0.65) · Consent checkbox: (+0.32) · Email marketing consent: A marketing consent block can be required and also asks for email open and click tracking consent. (+0.32) | 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 |
| Hidden fields | Not confirmed | Hidden properties on the submit button are saved to the profile. (+0.32) | 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: (+0.16) | (+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) | Omnisend: [Multi-step](https://support.omnisend.com/en/articles/6305857-create-a-popup-signup-form), 2026-09-29; [Multi-step](https://support.omnisend.com/en/articles/6305857-create-a-popup-signup-form), 2026-09-29; [Multi-step](https://support.omnisend.com/en/articles/6305857-create-a-popup-signup-form), 2026-09-29 · 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 |
| Logic | Not confirmed | Not confirmed | — |
| Validation | Not confirmed | (+1.29) · Validation: (+0.32) · Field validation: (+0.32) · Phone format: The phone field checks that the number is stored in an acceptable format. (+0.32) · Required fields: Any input can be required, with editable required and invalid messages. (+0.32) | 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 |
| CAPTCHA | Not confirmed | (+0.32) | Klaviyo: [CAPTCHA](https://help.klaviyo.com/hc/en-us/articles/360026474752), 2026-09-29 |
| Email double opt-in | (+0.16) | (+0.16) | Omnisend: [Email double opt-in](https://support.omnisend.com/en/articles/6305857-create-a-popup-signup-form), 2026-09-29 · Klaviyo: [Email double opt-in](https://help.klaviyo.com/hc/en-us/articles/9890182538011), 2026-09-29 |
| Follow-up | (+0.65) · Follow-up: (+0.16) · After signup: (+0.16) · Email automation: (+0.16) · Email sequences: (+0.16) | (+1.29) · Follow-up: (+0.16) · After signup: (+0.16) · Email automation: (+0.16) · Email sequences: Flows chain messages with delays between them. (+0.16) · 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) | Omnisend: [Follow-up](https://support.omnisend.com/en/articles/9653272-welcome-automation), 2026-09-29; [Follow-up](https://support.omnisend.com/en/articles/9653272-welcome-automation), 2026-09-29; [Follow-up](https://support.omnisend.com/en/articles/9653272-welcome-automation), 2026-09-29; [Follow-up](https://support.omnisend.com/en/articles/9653272-welcome-automation), 2026-09-29; [Follow-up: Email automation](https://support.omnisend.com/en/articles/9653272-welcome-automation), 2026-09-29; [Follow-up: Email sequences](https://support.omnisend.com/en/articles/9653272-welcome-automation), 2026-09-29; [Follow-up](https://support.omnisend.com/en/articles/9653272-welcome-automation), 2026-09-29; [Follow-up](https://support.omnisend.com/en/articles/9653272-welcome-automation), 2026-09-29 · 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: Omnisend +1.45 (total 1.78), Klaviyo +5.98 (total 9.51).
## Round 3: Surveys
Weight: 4.5 points.
Omnisend’s signup fields feed audience data and subsequent communication. For an anonymous satisfaction survey, check whether the response can stand alone without a marketable contact. Klaviyo’s signup fields can collect preferences and customer information. Dedicated rating and quiz formats are assessed separately below.
| Criterion | Omnisend | Klaviyo | 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 | Not confirmed | — |
Round score: Omnisend +0 (total 1.78), Klaviyo +0 (total 9.51).
## Round 4: Gamification
Weight: 4.5 points.
Omnisend’s Wheel of Fortune supplies an incentive for signup. Assess reward delivery after early exit before considering a switch to a different form and coupon process. 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.
| Criterion | Omnisend | Klaviyo | Evidence |
| --- | --- | --- | --- |
| Spin the wheel | (+0.13) | 2 to 6 slices, each with its own success step and coupon. (+0.4) · 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%. (+0.26) | Omnisend: [Spin the wheel](https://support.omnisend.com/en/articles/1061849-popup-form-add-wheel-of-fortune), 2026-09-29; [Spin the wheel](https://support.omnisend.com/en/articles/1061849-popup-form-add-wheel-of-fortune), 2026-09-29; [Spin the wheel](https://support.omnisend.com/en/articles/1061849-popup-form-add-wheel-of-fortune), 2026-09-29 · 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 |
| 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 | Not confirmed | — |
| 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 | Not confirmed | — |
| Seasonal calendar | Not confirmed | Not confirmed | — |
| Daily offers | Not confirmed | Not confirmed | — |
Round score: Omnisend +0.13 (total 1.91), Klaviyo +0.4 (total 9.91).
## Round 5: Targeting
Weight: 10.8 points.
For store-triggered email, identify the event and customer segment that enrol the contact. For an onsite popup, test eligibility on the page separately. A flow condition does not establish an identical form display rule. 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.
| Criterion | Omnisend | Klaviyo | Evidence |
| --- | --- | --- | --- |
| Page targeting | Not confirmed | URL rules with wildcards and UTM filters. (+0.45) | Klaviyo: [Page targeting](https://help.klaviyo.com/hc/en-us/articles/4413544555547), 2026-10-17 |
| Geo targeting | Not confirmed | Countries or other locations, from the visitor's IP address. (+0.45) | Klaviyo: [Geo targeting](https://help.klaviyo.com/hc/en-us/articles/4413544555547), 2026-10-17 |
| Device targeting | Not confirmed | (+0.45) | Klaviyo: [Device targeting](https://help.klaviyo.com/hc/en-us/articles/4413544555547), 2026-10-17 |
| Audience targeting | Not confirmed | (+3.15) · Audience targeting: (+0.45) · Referrer targeting: UTM source, medium, campaign, term and ID. (+0.45) · 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) | 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 |
| Behavior triggers | Not confirmed | (+2.25) · Behavior triggers: (+0.45) · Time delay: (+0.45) · Exit intent: (+0.45) · Scroll trigger: (+0.45) · Custom event trigger: (+0.45) | 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 |
| Click trigger | Not confirmed | (+0.45) | Klaviyo: [Click trigger](https://help.klaviyo.com/hc/en-us/articles/4418052317339), 2026-10-17 |
| Scheduling | Not confirmed | (+0.45) | Klaviyo: [Scheduling](https://help.klaviyo.com/hc/en-us/articles/360002049952), 2026-10-17 |
| Frequency cap | Not confirmed | Days to wait before a closed form returns, or show it on every visit. (+0.45) | Klaviyo: [Frequency cap](https://help.klaviyo.com/hc/en-us/articles/4413544555547), 2026-10-17 |
| Campaign control | Not confirmed | Low, Medium, High or Highest priority decides which queued form shows first. (+0.45) | Klaviyo: [Campaign control](https://help.klaviyo.com/hc/en-us/articles/4413544555547), 2026-10-17 |
Round score: Omnisend +0 (total 1.91), Klaviyo +8.55 (total 18.46).
## Round 6: Experiments
Weight: 6.3 points.
Choose form conversion, confirmed signup or first purchase before opening the test. A flyout that submits more often can still contribute fewer reachable subscribers. Omnisend documents tests of popup, flyout and fullscreen forms. Embedded forms are excluded from that form-testing scope. Use the actual placement when comparing experiment access. 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.
| Criterion | Omnisend | Klaviyo | Evidence |
| --- | --- | --- | --- |
| A/B testing | (+1.4) · A/B testing: (+0.35) · Popup tests: (+0.35) · Email or SMS campaign tests: (+0.35) · Email tests: (+0.35) | Up to 7 form variations. (+3.5) · 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%. (+0.7) · 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: (+0.35) · Email tests: (+0.35) · SMS tests: (+0.7) | Omnisend: [A/B testing](https://support.omnisend.com/en/articles/8460441-a-b-test-your-signup-forms), 2026-09-29; [A/B testing](https://support.omnisend.com/en/articles/8460441-a-b-test-your-signup-forms), 2026-09-29; [A/B testing](https://support.omnisend.com/en/articles/8460441-a-b-test-your-signup-forms), 2026-09-29; [A/B testing](https://support.omnisend.com/en/articles/8460441-a-b-test-your-signup-forms), 2026-09-29; [A/B testing](https://support.omnisend.com/en/articles/8460441-a-b-test-your-signup-forms), 2026-09-29; [A/B testing](https://support.omnisend.com/en/articles/8460441-a-b-test-your-signup-forms), 2026-09-29; [A/B testing: Email or SMS campaign tests](https://support.omnisend.com/en/articles/1061883-a-b-test-your-email-campaigns), 2026-10-16; [A/B testing: Email tests](https://support.omnisend.com/en/articles/1061883-a-b-test-your-email-campaigns), 2026-10-16; [A/B testing](https://support.omnisend.com/en/articles/8460441-a-b-test-your-signup-forms), 2026-09-29 · 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 |
Round score: Omnisend +1.4 (total 3.31), Klaviyo +3.5 (total 21.96).
## Round 7: Email & SMS
Weight: 4.5 points.
Send one test welcome to a new address and update a returning buyer who has already received it. A correctly stored preference should affect future segmentation without accidentally restarting an old series. Omnisend runs welcome sequences, cart recovery and regular email campaigns. Standard raises sending capacity and removes branding; SMS has its own charges. Compare channel use and reachable contacts at the same workload.
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.
| Criterion | Omnisend | Klaviyo | Evidence |
| --- | --- | --- | --- |
| Email marketing | (+0.75) | Campaigns, segments and flows; sending and profile limits depend on the plan. (+0.75) | Omnisend: [Email marketing](https://support.omnisend.com/en/articles/9653272-welcome-automation), 2026-09-29 · Klaviyo: [Email marketing](https://help.klaviyo.com/hc/en-us/articles/115002775172), 2026-09-29 |
| SMS marketing | (+0.75) | (+0.75) | Omnisend: [SMS marketing](https://www.omnisend.com/pricing/), 2026-09-29 · Klaviyo: [SMS marketing](https://help.klaviyo.com/hc/en-us/articles/360035285472), 2026-09-29 |
| Web push | (+1.5) | Not confirmed | Omnisend: [Web push](https://www.omnisend.com/pricing/), 2026-09-29 |
Round score: Omnisend +3 (total 6.31), Klaviyo +1.5 (total 23.46).
## Round 8: Team & sites
Weight: 4.5 points.
Ask an analyst to inspect one store and an agency owner to oversee several. Cross-account reporting is useful only when client data remains appropriately separated. Omnisend supports role-based work across stores. Owners and Admins can see every store in an account. An agency promising isolation needs to evaluate that boundary separately from whether an editor can produce a campaign.
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.
| Criterion | Omnisend | Klaviyo | Evidence |
| --- | --- | --- | --- |
| Workspaces | (+0.84) · Workspaces: (+0.28) · Several sites: (+0.56) | Portfolio groups several accounts for management. (+0.84) · Workspaces: Portfolio groups several accounts for management. (+0.28) · Client portfolio: (+0.56) | Omnisend: [Workspaces](https://support.omnisend.com/en/articles/3387080-set-up-user-access-roles), 2026-09-29; [Workspaces](https://support.omnisend.com/en/articles/3387080-set-up-user-access-roles), 2026-09-29; [Workspaces](https://support.omnisend.com/en/articles/3387080-set-up-user-access-roles), 2026-09-29; [Workspaces](https://support.omnisend.com/en/articles/3387080-set-up-user-access-roles), 2026-09-29 · 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 |
| Team | (+0.28) | 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) | Omnisend: [Team](https://support.omnisend.com/en/articles/3387080-set-up-user-access-roles), 2026-09-29; [Team](https://support.omnisend.com/en/articles/3387080-set-up-user-access-roles), 2026-09-29 · 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 |
| Roles | (+0.28) | (+0.84) · Roles: (+0.28) · Billing access controls: Only Owners and Admins can edit billing. (+0.56) | Omnisend: [Roles](https://support.omnisend.com/en/articles/3387080-set-up-user-access-roles), 2026-09-29; [Roles](https://support.omnisend.com/en/articles/3387080-set-up-user-access-roles), 2026-09-29 · 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 |
Round score: Omnisend +1.41 (total 7.71), Klaviyo +2.53 (total 25.99).
## Round 9: Developer
Weight: 4.5 points.
Omnisend publishes developer APIs for commerce and customer data. For an integration whose job is to build or publish popup forms, verify those precise operations. Klaviyo documents a separate Forms API and permission scopes. 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.
| Criterion | Omnisend | Klaviyo | Evidence |
| --- | --- | --- | --- |
| HTTP API | Not confirmed | 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) | 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 | Not confirmed | (+0.38) | Klaviyo: [Browser API](https://developers.klaviyo.com/en/docs/introduction_to_the_klaviyo_object), 2026-10-17 |
| Webhooks | Not confirmed | Not confirmed | Klaviyo: [Webhooks](https://help.klaviyo.com/hc/en-us/articles/4534329515931), 2026-10-17 |
| MCP server | Not confirmed | (+1.5) · MCP server: (+0.38) · Create designs: The MCP server has a tool to create forms. (+0.38) · Read performance: (+0.38) · Scoped credentials: Setting read-only=true disables every tool that writes to the account. (+0.38) | 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 |
Round score: Omnisend +0 (total 7.71), Klaviyo +3.75 (total 29.74).
## Round 10: Support
Weight: 1.8 points.
Omnisend advertises 24/7 chat and email support even on Free. Compare the assistance required to migrate flows and suppression records with general access to a support channel. 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.
| Criterion | Omnisend | Klaviyo | Evidence |
| --- | --- | --- | --- |
| Chat support | (+0.9) | Live chat on paid plans; Free gets 60 days of email support. (+0.9) | Omnisend: [Chat support](https://www.omnisend.com/pricing/), 2026-09-29 · Klaviyo: [Chat support](https://help.klaviyo.com/hc/en-us/articles/115001002272), 2026-10-17 |
Round score: Omnisend +0.9 (total 8.61), Klaviyo +0.9 (total 30.64).
## Round 11: Editor & workflow
Weight: 5.4 points.
Native Omnisend forms collect into the same service that sends the follow-up. For a new campaign, test what happens when an existing customer submits a second preference after the initial welcome series. Klaviyo includes the form editor on Free. Draft, Live and Editing statuses separate work in progress from the form visitors see.
| Criterion | Omnisend | Klaviyo | Evidence |
| --- | --- | --- | --- |
| Free editor | Not confirmed | (+0.77) | Klaviyo: [Free editor](https://www.klaviyo.com/pricing), 2026-10-17 |
| Campaign drafts | Not confirmed | Draft, Live and Editing statuses; a draft is not live. (+0.77) | Klaviyo: [Campaign drafts](https://help.klaviyo.com/hc/en-us/articles/360002049952), 2026-10-17 |
| Saved versions | Not confirmed | Not confirmed | — |
| AI popup assistant | Not confirmed | Not confirmed | — |
Round score: Omnisend +0 (total 8.61), Klaviyo +1.54 (total 32.18).
## Round 12: Data & reporting
Weight: 4.5 points.
For Omnisend, reconcile submitted forms, confirmed subscribers, individual sends and store orders. Opening a welcome email and buying after an unrelated visit should remain distinguishable in the retention team’s reporting brief. 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.
| Criterion | Omnisend | Klaviyo | Evidence |
| --- | --- | --- | --- |
| Field mapping | Not confirmed | Not confirmed | — |
| Lead export | Not confirmed | Build a segment of form submitters and export it to CSV. (+0.64) | Klaviyo: [Lead export](https://help.klaviyo.com/hc/en-us/articles/4406228129051), 2026-10-17 |
| Scheduled reports | Not confirmed | Weekly or monthly custom reports, sent as a download link. (+0.64) | Klaviyo: [Scheduled reports](https://help.klaviyo.com/hc/en-us/articles/4407838420123), 2026-10-17 |
| Revenue goals | Not confirmed | Revenue from orders after a form interaction, also per A/B variation. (+0.64) | Klaviyo: [Revenue goals](https://help.klaviyo.com/hc/en-us/articles/360015960712), 2026-10-17 |
| Team notifications | Not confirmed | Not confirmed | — |
Round score: Omnisend +0 (total 8.61), Klaviyo +1.93 (total 34.11).
## Round 13: Integrations
Weight: 4.5 points.
Omnisend’s ecommerce connections bring customer, order and product context into the sender. Its own forms collect into Omnisend; integrations with other platforms can carry different objects in different directions. 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.
| Criterion | Omnisend | Klaviyo | Evidence |
| --- | --- | --- | --- |
| Email | Not confirmed | Not confirmed | — |
| SMS | Not confirmed | Not confirmed | — |
| CRM | Not confirmed | Zoho, Microsoft Dynamics: Sync leads and custom properties with CRM platforms. Pipedrive: Outfunnel provides a partner connection between Klaviyo and Pipedrive. Set the direction, choose the contacts to sync and map their fields. For a Klaviyo popup feeding sales, verify that the signup enters the selected audience and creates or updates the intended Pipedrive person. Account for the separate connector. Salesforce: Install the Salesforce CRM integration in Klaviyo, select Salesforce objects and map their fields to profile properties. Records flow from Salesforce into Klaviyo, matched by email. This documented connection will help personalize a form or follow-up using CRM data; it does not establish a route for writing a Klaviyo signup back as a Salesforce lead. 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. (+0.25) | Klaviyo: [Pipedrive connection](https://support.outfunnel.com/en/articles/8450445-how-to-set-up-a-2-way-sync-between-pipedrive-and-klaviyo), 2026-10-17; [Salesforce connection](https://help.klaviyo.com/hc/en-us/articles/115005081947), 2026-10-17; [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 |
| Messaging | Not confirmed | Not confirmed | — |
| Customer lifecycle | Gorgias, Yotpo, Okendo, Typeform: Connect support, review and form data to marketing workflows; capabilities vary by app. (+0.13) | 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. (+0.13) | Omnisend: [Integration catalogue](https://www.omnisend.com/integration/), 2026-10-05; [Supported store integrations](https://support.omnisend.com/en/articles/2888766-supported-ecommerce-integrations-in-omnisend), 2026-10-05 · Klaviyo: [Pipedrive connection](https://support.outfunnel.com/en/articles/8450445-how-to-set-up-a-2-way-sync-between-pipedrive-and-klaviyo), 2026-10-17; [Salesforce connection](https://help.klaviyo.com/hc/en-us/articles/115005081947), 2026-10-17; [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 | Not confirmed | — |
| Advertising | Facebook Lead Ads, Google Ads: Collect lead-ad subscribers or sync audiences with advertising channels. (+0.13) | Meta Advertising, TikTok Advertising, Google Ads, Pinterest, Snapchat: Sync audiences and events with advertising platforms. (+0.13) | Omnisend: [Integration catalogue](https://www.omnisend.com/integration/), 2026-10-05; [Supported store integrations](https://support.omnisend.com/en/articles/2888766-supported-ecommerce-integrations-in-omnisend), 2026-10-05 · Klaviyo: [Pipedrive connection](https://support.outfunnel.com/en/articles/8450445-how-to-set-up-a-2-way-sync-between-pipedrive-and-klaviyo), 2026-10-17; [Salesforce connection](https://help.klaviyo.com/hc/en-us/articles/115005081947), 2026-10-17; [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, Wix, Shoplazza, Ecwid, PrestaShop, nopCommerce, Big Cartel, SureCart: Store integrations supply customer, order and product data. The exact capabilities vary by platform. (+0.13) | 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. (+0.13) | Omnisend: [Integration catalogue](https://www.omnisend.com/integration/), 2026-10-05; [Supported store integrations](https://support.omnisend.com/en/articles/2888766-supported-ecommerce-integrations-in-omnisend), 2026-10-05 · Klaviyo: [Pipedrive connection](https://support.outfunnel.com/en/articles/8450445-how-to-set-up-a-2-way-sync-between-pipedrive-and-klaviyo), 2026-10-17; [Salesforce connection](https://help.klaviyo.com/hc/en-us/articles/115005081947), 2026-10-17; [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 | Not confirmed | — |
| Personalization | Not confirmed | Not confirmed | — |
| Reviews | Not confirmed | Judge.me, Loox, Okendo, REVIEWS.io, Junip: Bring review events and data into segments and flows. (+0.25) | Klaviyo: [Pipedrive connection](https://support.outfunnel.com/en/articles/8450445-how-to-set-up-a-2-way-sync-between-pipedrive-and-klaviyo), 2026-10-17; [Salesforce connection](https://help.klaviyo.com/hc/en-us/articles/115005081947), 2026-10-17; [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 | Canva: Keep creative assets synchronized with the Omnisend image library. (+0.25) | Not confirmed | Omnisend: [Integration catalogue](https://www.omnisend.com/integration/), 2026-10-05; [Supported store integrations](https://support.omnisend.com/en/articles/2888766-supported-ecommerce-integrations-in-omnisend), 2026-10-05 |
| Custom forms | Not confirmed | Not confirmed | — |
| Data & validation | Not confirmed | Not confirmed | — |
| Spreadsheets | Not confirmed | Not confirmed | — |
| Automation | Not confirmed | Shopify Flow, Zapier: Connect Shopify Flow and Zapier workflows to Klaviyo. (+0.25) | Klaviyo: [Pipedrive connection](https://support.outfunnel.com/en/articles/8450445-how-to-set-up-a-2-way-sync-between-pipedrive-and-klaviyo), 2026-10-17; [Salesforce connection](https://help.klaviyo.com/hc/en-us/articles/115005081947), 2026-10-17; [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 |
| Custom connections | API: Connect another store using a tracking snippet and API data sync. (+0.13) | REST API, SDKs, Webhooks: Build a custom connection for profiles, events and other supported resources; flows can call a webhook. (+0.13) | Omnisend: [Integration catalogue](https://www.omnisend.com/integration/), 2026-10-05; [Supported store integrations](https://support.omnisend.com/en/articles/2888766-supported-ecommerce-integrations-in-omnisend), 2026-10-05 · Klaviyo: [Pipedrive connection](https://support.outfunnel.com/en/articles/8450445-how-to-set-up-a-2-way-sync-between-pipedrive-and-klaviyo), 2026-10-17; [Salesforce connection](https://help.klaviyo.com/hc/en-us/articles/115005081947), 2026-10-17; [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 |
Round score: Omnisend +0.75 (total 9.36), Klaviyo +1.25 (total 35.36).
## Round 14: Shopify
Weight: 12.6 points.
For a Shopify migration, test customer matching, order arrival and the suppression of an outstanding cart reminder. Moving the popup design proves none of those store-event handoffs. 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.
| Criterion | Omnisend | Klaviyo | Evidence |
| --- | --- | --- | --- |
| Storefront installation | A native Shopify app is available. (+0.39) | A native Shopify app is available. (+0.39) | Omnisend: [Shopify evidence](https://apps.shopify.com/omnisend), 2026-10-01 · Klaviyo: [Shopify evidence](https://apps.shopify.com/klaviyo-email-marketing), 2026-10-01 |
| Native Shopify app | A native app is available in the Shopify App Store. (+0.39) | A native app is available in the Shopify App Store. (+0.39) | Omnisend: [Shopify evidence](https://apps.shopify.com/omnisend), 2026-10-01 · Klaviyo: [Shopify evidence](https://apps.shopify.com/klaviyo-email-marketing), 2026-10-01 |
| Built for Shopify | No | No | Omnisend: [App website](https://apps.shopify.com/omnisend), 2026-10-13 · Klaviyo: [App website](https://apps.shopify.com/klaviyo-email-marketing), 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 | Not confirmed | Klaviyo generates unique Shopify discount codes for forms and flows, and records discount codes used on orders. (+0.79) | 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 Omnisend. (+0.39) | Bring Shopify customer and order data into Klaviyo. (+0.39) | Omnisend: [Shopify evidence](https://support.omnisend.com/en/articles/2888766-supported-ecommerce-integrations-in-omnisend), 2026-10-05 · Klaviyo: [Shopify evidence](https://help.klaviyo.com/hc/en-us/articles/16741902158491), 2026-10-05 |
| Shopify customer synchronization | Synchronize Shopify customer and order data into Omnisend. (+0.39) | 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) | Omnisend: [Shopify evidence](https://support.omnisend.com/en/articles/2888766-supported-ecommerce-integrations-in-omnisend), 2026-10-05 · 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 |
| Shopify events and triggers | Not confirmed | Klaviyo tracks Shopify Added to Cart, Checkout Started and Placed Order events, usable as flow triggers and segment conditions. (+0.79) | Klaviyo: [Shopify data in Klaviyo](https://help.klaviyo.com/hc/en-us/articles/115005080447), 2026-10-17 |
| Shopify audience and cart targeting | Not confirmed | Forms can target Shopify cart value and products, and lists or segments built from Shopify customer and order data. (+0.79) | Klaviyo: [Form targeting](https://help.klaviyo.com/hc/en-us/articles/4413544555547), 2026-10-17 |
| Apply a Shopify discount | Not confirmed | A Shopify unique coupon created through a form is applied automatically to the customer's cart at checkout. (+0.79) | 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: Omnisend +1.57 (total 10.94), Klaviyo +4.72 (total 40.09).
## Round 15: Pricing
Weight: 10 points.
Compare a frequent newsletter on a small audience with an occasional digest on a much larger list. They can produce similar send totals and very different contact charges. At the recorded small-list workload, Omnisend Standard includes 500 contacts and 6,000 emails for $16 monthly. Klaviyo’s corresponding quote must cover the same active audience and send count. Add SMS by destination and volume to both.
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.
| Criterion | Omnisend | Klaviyo | Evidence |
| --- | --- | --- | --- |
| A small website (visitors / mo: 1,000, pageviews / mo: 2,000, website: 1) | Not confirmed | $0 / mo · Free. Klaviyo bills active profiles and email sends, not pageviews, so form traffic alone fits the Free plan. (+1) | Klaviyo: [Klaviyo pricing](https://www.klaviyo.com/pricing), 2026-10-17 |
| Visitors explore more pages (visitors / mo: 10,000, pageviews / mo: 60,000, website: 1) | Not confirmed | $0 / mo · Free. Klaviyo bills active profiles and email sends, not pageviews, so form traffic alone fits the Free plan. (+1) | Klaviyo: [Klaviyo pricing](https://www.klaviyo.com/pricing), 2026-10-17 |
| A higher-traffic website (visitors / mo: 50,000, pageviews / mo: 100,000, website: 1) | Not confirmed | $0 / mo · Free. Klaviyo bills active profiles and email sends, not pageviews, so form traffic alone fits the Free plan. (+1) | Klaviyo: [Klaviyo pricing](https://www.klaviyo.com/pricing), 2026-10-17 |
| Two websites on one account (visitors / mo: 10,000 total, pageviews / mo: 20,000 total, websites: 2) | Not confirmed | Not confirmed | — |
| Launch popups without vendor branding (visitors / mo: 1,000, pageviews / mo: 2,000, website: 1) | $16 / mo · Standard. Standard removes branding from forms and includes 500 contacts and 6,000 emails. (+0.56) | $20 / mo · Email · 251–500 contacts. Removing Klaviyo branding from forms needs a paid plan; the first email tier covers up to 500 profiles. (+0.44) | Omnisend: [Pricing](https://apps.shopify.com/omnisend), 2026-10-06 · Klaviyo: [Klaviyo Shopify app](https://apps.shopify.com/klaviyo-email-marketing), 2026-10-17 |
| Run a sale or promotion (visitors / mo: 1,000, pageviews / mo: 2,000, website: 1) | Not confirmed | $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. (+1) | Klaviyo: [Klaviyo Shopify app](https://apps.shopify.com/klaviyo-email-marketing), 2026-10-17 |
| Improve popup conversion with A/B testing (visitors / mo: 1,000, pageviews / mo: 2,000, website: 1) | Not confirmed | $0 / mo · Free. Form A/B tests are available on Free, and 250 contacts fit its limit. (+1) | Klaviyo: [Klaviyo pricing](https://www.klaviyo.com/pricing), 2026-10-17 |
| Collect data and feedback with surveys, quizzes and forms (visitors / mo: 1,000, pageviews / mo: 2,000, website: 1) | Not confirmed | $0 / mo · Free. Forms with text and choice fields are available on Free within its 250-profile limit. (+1) | Klaviyo: [Klaviyo pricing](https://www.klaviyo.com/pricing), 2026-10-17 |
| Signup plus an automated welcome email (visitors / mo: 1,000, pageviews / mo: 2,000, website: 1, active contacts: 500, emails / mo: 1,000) | $16 / mo · Standard. Standard covers 500 contacts and 1,000 welcome emails within its 6,000-email allowance; Free is limited to 250 contacts and 500 emails. (+0.56) | $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. (+0.44) | Omnisend: [Pricing](https://apps.shopify.com/omnisend), 2026-10-06 · 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) | $16 / mo · Standard. Standard includes email campaigns and automation for 500 contacts; 5,000 emails fit its 6,000-email allowance. (+0.56) | $20 / mo · Email · 251–500 contacts. Campaigns, segments and flows are included; the 500-profile tier allows 5,000 emails a month. (+0.44) | Omnisend: [Pricing](https://apps.shopify.com/omnisend), 2026-10-06 · Klaviyo: [Klaviyo Shopify app](https://apps.shopify.com/klaviyo-email-marketing), 2026-10-17 |
Round score: Omnisend +1.67 (total 12.61), Klaviyo +7.33 (total 47.42).
## The final score
Choose Omnisend when its ecommerce automations, forms and sending allowance already cover the customer journey at the real contact tier. Choose Klaviyo when richer profile-led segmentation, cross-account oversight or the documented forms and reporting interfaces justify rebuilding the program. For a problem confined to the popup, keep the sending stack in the first trial.
| Round | Omnisend | Klaviyo |
| --- | --- | --- |
| Formats & content | 0.32 | 3.54 |
| Forms | 1.45 | 5.98 |
| Surveys | 0 | 0 |
| Gamification | 0.13 | 0.4 |
| Targeting | 0 | 8.55 |
| Experiments | 1.4 | 3.5 |
| Email & SMS | 3 | 1.5 |
| Team & sites | 1.41 | 2.53 |
| Developer | 0 | 3.75 |
| Support | 0.9 | 0.9 |
| Editor & workflow | 0 | 1.54 |
| Data & reporting | 0 | 1.93 |
| Integrations | 0.75 | 1.25 |
| Shopify | 1.57 | 4.72 |
| Pricing | 1.67 | 7.33 |
| Total | 12.61 | 47.42 |
## 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 | Omnisend | Klaviyo |
| --- | --- | --- |
| The overall feature set | 12.61 | 47.42 |
| Popups without email marketing | 6.67 | 52.92 |
| Collecting more leads | 9.6 | 48.81 |
| Driving clicks and actions | 9.36 | 55.94 |
| Popups and email marketing in one service | 21.18 | 45.06 |
| Running campaigns for my Shopify store | 12.54 | 40.91 |
| A/B testing and measuring results | 12.84 | 49.31 |
| Creating and editing campaigns with AI | — · Required capability unconfirmed | — · Required capability unconfirmed |
| Collecting data and feedback | — · Required capability unconfirmed | 48.61 |
| Working with a team or managing clients | 25.39 | 53.48 |
| Connecting AI agents to my workflow | — · Required capability unconfirmed | 75.29 |
## How the comparison works
These scores are relative to Omnisend and Klaviyo 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 196 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
- [Alternatives to Omnisend](https://popuppapa.com/alternatives-to-omnisend/index.md): Choose between changing the popup and migrating the entire sending program.
- [Alternatives to Klaviyo](https://popuppapa.com/alternatives-to-klaviyo/index.md): Compare alternatives for profile-led messaging and onsite acquisition.
- [Popup tools for Omnisend](https://popuppapa.com/omnisend-popup-integrations/index.md): Find forms that feed an existing Omnisend account when sending should stay in place.