FlowPost vs Klaviyo

FlowPost: Transactional Email 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: FlowPost: Transactional Email at Free trial available, Klaviyo: 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 (seats, usage volume, integrations) varies.

Klaviyo: Email Marketing & SMS has the larger user base (3,289 reviews vs 1), which usually maps to broader integration coverage, faster bug-fix cadence, and a deeper bench of community workflow patterns. FlowPost: Transactional Email'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 FlowPost: Transactional Email; mid-market and enterprise merchants with specific feature requirements should evaluate both — Klaviyo: Email Marketing & SMS's 3,289-review base may include the workflow context that matches your specific use case better than FlowPost: Transactional Email'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 FlowPost: Transactional Email or Klaviyo: Email Marketing & SMS cheaper?

Both FlowPost: Transactional Email and Klaviyo: Email Marketing & SMS offer paid plans only. FlowPost: Transactional Email starts at Free trial available; Klaviyo: Email Marketing & SMS starts at Free to install. Compare the per-tier features in the Pricing section above before committing.

Which has better reviews, FlowPost: Transactional Email or Klaviyo: Email Marketing & SMS?

FlowPost: Transactional Email has the higher average rating (5.0★ from 1 reviews) compared to Klaviyo: Email Marketing & SMS (4.7★ from 3,289 reviews). Both are tracked daily by AppRanks, so the figures here update each refresh cycle.

Should I choose FlowPost: Transactional Email or Klaviyo: Email Marketing & SMS?

FlowPost: Transactional Email 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, FlowPost: Transactional Email or Klaviyo: Email Marketing & SMS?

Both apps are one-click installs from the Shopify App Store. Klaviyo: Email Marketing & SMS has the deeper published review base (3,289 vs 1), 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?

FlowPost: Transactional Email typically suits early-stage and growth-mode teams based on its published review base (1 reviews). Klaviyo: Email Marketing & SMS typically suits early-stage and growth-mode teams based on its published review base (3,289 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.