1. Listing metadata
Field-level data| K | Omnisend | |
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| Description | ||
| Screenshots | images | images |
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| Developer | ||
| Listed | ||
| Last updated |
| K | Omnisend | |
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| Tagline | ||
| Description | ||
| Screenshots | images | images |
| Languages | ||
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| Developer | ||
| Listed | ||
| Last updated |
| Metric | K: Pop Up Email+Popup Window | Omnisend Email Marketing & SMS |
|---|---|---|
| Rating | ★ 5.0 ★ | 4.8 ★ |
| Total reviews | 6 | ★ 3k |
| Free plan | Yes | Yes |
| Pricing | Free | Free to install |
| Built for Shopify | — | — |
| Pricing tiers | — | 3 tiers |
| Listed features | 5 | 5 |
| Featured placements | — | 2 |
| Languages | 4 supported | 1 supported |
| Listed since | Oct 2025 | Mar 2014 |
K: Pop Up Email+Popup Window edges out Omnisend Email Marketing & SMS on rating (5.0★ vs 4.8★), but the gap is small enough that pricing fit and feature differentiation should drive the decision more than the headline number. Pricing entry tiers: K: Pop Up Email+Popup Window at Free, Omnisend Email Marketing & SMS at Free to install. 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. Omnisend Email Marketing & SMS has the larger user base (2,955 reviews vs 6), which usually maps to broader integration coverage, faster bug-fix cadence, and a deeper bench of community workflow patterns. K: Pop Up Email+Popup Window'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 K: Pop Up Email+Popup Window; mid-market and enterprise merchants with specific feature requirements should evaluate both — Omnisend Email Marketing & SMS's 2,955-review base may include the workflow context that matches your specific use case better than K: Pop Up Email+Popup Window'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: K: Pop Up Email+Popup Window audit • Omnisend Email Marketing & SMS audit
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| Keyword | K | Omnisend |
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| #233 | #3 | |
| chat support | Not ranked | #16 |
| yotpo | Not ranked | #26 |
Not featured in any section recently.
No tracked changes.
Both K: Pop Up Email+Popup Window and Omnisend Email Marketing & SMS offer paid plans only. K: Pop Up Email+Popup Window starts at Free; Omnisend Email Marketing & SMS starts at Free to install. Compare the per-tier features in the Pricing section above before committing.
K: Pop Up Email+Popup Window has the higher average rating (5.0★ from 6 reviews) compared to Omnisend Email Marketing & SMS (4.8★ from 2,955 reviews). Both are tracked daily by AppRanks, so the figures here update each refresh cycle.
It depends on what you're optimizing for. K: Pop Up Email+Popup Window fits better if you prioritize rating consistency; Omnisend Email Marketing & SMS 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. Omnisend Email Marketing & SMS has more onboarding documentation maturity (2,955 reviews vs 6), 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.
K: Pop Up Email+Popup Window typically suits early-stage and growth-mode stores based on its review-base composition (6 reviews). Omnisend Email Marketing & SMS aligns more with early-stage and growth-mode stores (2,955 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. K: Pop Up Email+Popup Window and Omnisend Email Marketing & SMS 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 K: Pop Up Email+Popup Window" in each app's help center. AppRanks does not track migration tooling directly — this is a category-specific capability worth verifying before commitment.
