Klaviyo vs Zammer RCS

Zammer RCS edges out Klaviyo: Email Marketing & SMS on rating (5.0★ vs 4.7★), but the gap is small enough that pricing fit and feature differentiation should drive the decision more than the headline number.

Pricing entry tiers: Klaviyo: Email Marketing & SMS at Free plan available, Zammer RCS 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 (seats, usage volume, integrations) varies.

Klaviyo: Email Marketing & SMS has the larger user base (3,292 reviews vs 3), which usually maps to broader integration coverage, faster bug-fix cadence, and a deeper bench of community workflow patterns. Zammer RCS's smaller cohort can be an advantage for niche workflows where the bigger app has accumulated bloat.

Recommended by size: small/early-stage merchants who need fast install and low risk should default to Zammer RCS; mid-market and enterprise merchants with specific feature requirements should evaluate both — Klaviyo: Email Marketing & SMS's 3,292-review base may include the workflow context that matches your specific use case better than Zammer RCS'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.

Is Klaviyo: Email Marketing & SMS or Zammer RCS cheaper?

Both Klaviyo: Email Marketing & SMS and Zammer RCS offer paid plans only. Klaviyo: Email Marketing & SMS starts at Free plan available; Zammer RCS starts at Free plan available. Compare the per-tier features in the Pricing section above before committing.

Which has better reviews, Klaviyo: Email Marketing & SMS or Zammer RCS?

Zammer RCS has the higher average rating (5.0★ from 3 reviews) compared to Klaviyo: Email Marketing & SMS (4.7★ from 3,292 reviews). Both are tracked daily by AppRanks, so the figures here update each refresh cycle.

Should I choose Klaviyo: Email Marketing & SMS or Zammer RCS?

Zammer RCS holds the higher average rating (5.0★ vs 4.7★). That is the one dimension AppRanks can separate them on here — read both apps' detail pages for the feature breakdown and recent listing changes.

Which is faster to set up, Klaviyo: Email Marketing & SMS or Zammer RCS?

Both apps are one-click installs from the Shopify App Store. Klaviyo: Email Marketing & SMS has the deeper published review base (3,292 vs 3), which often — though not always — accompanies better-tested setup docs. AppRanks doesn't measure setup time directly: read the recent reviews on each app's detail page for user-reported install experience.

Which works better for small vs large Shopify App Store merchants?

Klaviyo: Email Marketing & SMS typically suits early-stage and growth-mode teams based on its published review base (3,292 reviews). Zammer RCS typically suits early-stage and growth-mode teams based on its published review base (3 reviews). A larger review base generally means the app has been exercised at scale — relevant if you are processing high volume or handling enterprise compliance requirements.

Can I migrate data between Klaviyo: Email Marketing & SMS and Zammer RCS?