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Field-level data| Klaviyo | SendHeap | |
|---|---|---|
| Tagline | ||
| Description | ||
| Screenshots | images | images |
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| Developer | ||
| Listed |
| Klaviyo | SendHeap | |
|---|---|---|
| Tagline | ||
| Description | ||
| Screenshots | images | images |
| Languages | ||
| Platforms | ||
| Developer | ||
| Listed |
| Metric | Klaviyo: Email Marketing & SMS | SendHeap: Email, SMS & Pop Ups |
|---|---|---|
| Rating | 4.7 ★ | — |
| Total reviews | 3k | 0 |
| Free plan | Yes | Yes |
| Pricing | Free to install | Free plan available |
| Built for Shopify | — | — |
| Pricing tiers | 3 tiers | ★ 4 tiers |
| Listed features | 5 | 5 |
| Featured placements | 4 | — |
| Review velocity (30d) | 133 new | — |
| Languages | 10 supported | 1 supported |
| Listed since | Sep 2012 | Oct 2025 |
Based on the data on this page, Klaviyo: Email Marketing & SMS is the stronger choice for most Shopify App Store merchants — 4.7★ vs SendHeap: Email, SMS & Pop Ups's 0.0★ is a meaningful gap that usually reflects real product or support quality differences across the user base. Pricing entry tiers: Klaviyo: Email Marketing & SMS at Free to install, SendHeap: Email, SMS & Pop Ups at Free plan available. Check each app's tier structure for the capacity limits you actually need before deciding — the headline number is the same shape, but the gating shape per tier (apps, orders, integrations) varies. Klaviyo: Email Marketing & SMS has the larger user base (2,964 reviews vs 0), which usually maps to broader integration coverage, faster bug-fix cadence, and a deeper bench of community workflow patterns. SendHeap: Email, SMS & Pop Ups's smaller cohort can be an advantage for niche workflows where the bigger app has accumulated bloat. Recommended by store size: small/early-stage merchants who need fast install and low risk should default to Klaviyo: Email Marketing & SMS; mid-market and enterprise merchants with specific feature requirements should evaluate both — SendHeap: Email, SMS & Pop Ups's 0-review base may include the workflow context that matches your specific use case better than Klaviyo: Email Marketing & SMS's broader-but-shallower coverage. This verdict is generated from the live marketplace data on this page — rating, review count, pricing tier, and category position all refresh from the canonical Shopify App Store listing every 24 hours. AppRanks does not accept payment to influence comparison outcomes; the methodology is documented on the About page and applies identically to every pair on the site.
Read each app's audit: Klaviyo: Email Marketing & SMS audit • SendHeap: Email, SMS & Pop Ups audit
| Last updated | — | — |
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| Keyword | Klaviyo | SendHeap |
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| #1 | #192 |
Not featured in any section recently.
No tracked changes.
| Signal | Klaviyo | SendHeap |
|---|---|---|
| Average rating | 4.7 ★ (3k) | 0.0 ★ (0) |
| Rating distribution | 590% 42% 30% 21% 17% | 5— 4— 3— 2— 1— |
| Reviews · last 7 days | +23 | — |
| Reviews · last 30 days | +133 | — |
| Reviews · last 90 days | +440 | — |
Both Klaviyo: Email Marketing & SMS and SendHeap: Email, SMS & Pop Ups offer paid plans only. Klaviyo: Email Marketing & SMS starts at Free to install; SendHeap: Email, SMS & Pop Ups starts at Free plan available. Compare the per-tier features in the Pricing section above before committing.
It depends on what you're optimizing for. Klaviyo: Email Marketing & SMS fits better if you prioritize rating consistency; SendHeap: Email, SMS & Pop Ups is the call if you need the larger user base. Read both apps' detail pages on AppRanks for the full feature breakdown, install counts, and recent listing changes.
Both apps are one-click installs from the Shopify App Store marketplace. Klaviyo: Email Marketing & SMS has more onboarding documentation maturity (2,964 reviews vs 0), which usually translates to better-tested setup wizards and quicker time-to-value. AppRanks doesn't measure setup time directly — read the recent reviews on each app's detail page for merchant-reported install experience.
Klaviyo: Email Marketing & SMS typically suits early-stage and growth-mode stores based on its review-base composition (2,964 reviews). SendHeap: Email, SMS & Pop Ups aligns more with early-stage and growth-mode stores (0 reviews). Larger review bases generally mean the app has been load-tested at scale — relevant if you're processing high order volume or handling enterprise compliance requirements.
Migration support varies by app and category. Klaviyo: Email Marketing & SMS and SendHeap: Email, SMS & Pop Ups both publish their export options on their marketplace listing pages (or in their support docs); some apps offer one-click import from competitors, others require CSV. The fastest check: search "import from SendHeap: Email, SMS & Pop Ups" in each app's help center. AppRanks does not track migration tooling directly — this is a category-specific capability worth verifying before commitment.
Unfortunately, we can’t recommend Klaviyo for several reasons. Basically, you constantly get the impression that their only goal is to push customers into a higher plan and keep them there. 1. Many fake profiles are created that inflate the plan count. 2. Deleting profiles is very cumbersome—you have to create a segmen
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