Side-by-side comparison · 24 data points
Flow action for transactional email: your provider or SMTP, with fallback, track delivery outcomes
| MailAction | Kindly | |
|---|---|---|
| Tagline | ||
| Description | ||
| Screenshots | images | images |
| Languages | ||
| Platforms | ||
| Developer | ||
| Listed | ||
| Last updated |
| Metric | MailAction: Send Email in Flow | Kindly: Payment Reminder Pro |
|---|---|---|
| Rating | — | 5.0 ★ |
| Total reviews | 0 | 31 |
| Free plan | Yes | Yes |
| Pricing | Free plan available | Free trial available |
| Built for Shopify | — | — |
| Pricing tiers | 4 tiers | 4 tiers |
| Listed features | 5 | 5 |
| Languages | 1 supported | 3 supported |
| Listed since | May 2026 | Aug 2020 |
Based on the data on this page, Kindly: Payment Reminder Pro is the stronger choice for most Shopify App Store merchants — 5.0★ vs MailAction: Send Email in Flow's 0.0★ is a meaningful gap that usually reflects real product or support quality differences across the user base.
Pricing entry tiers: MailAction: Send Email in Flow at Free plan available, Kindly: Payment Reminder Pro at Free trial 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.
Recommended by size: small/early-stage merchants who need fast install and low risk should default to Kindly: Payment Reminder Pro; mid-market and enterprise merchants with specific feature requirements should evaluate both — MailAction: Send Email in Flow's 0-review base may include the workflow context that matches your specific use case better than Kindly: Payment Reminder Pro'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: MailAction: Send Email in Flow audit • Kindly: Payment Reminder Pro audit
| — |
| Keyword | MailAction | Kindly |
|---|---|---|
| #37 | #94 |
No tracked changes.
Both MailAction: Send Email in Flow and Kindly: Payment Reminder Pro offer paid plans only. MailAction: Send Email in Flow starts at Free plan available; Kindly: Payment Reminder Pro starts at Free trial available. Compare the per-tier features in the Pricing section above before committing.
AppRanks cannot separate these two on rating, because neither publishes one. Kindly: Payment Reminder Pro does carry the larger published review base (31 vs 0). Read both apps' detail pages for the feature breakdown and recent listing changes.
Both apps are one-click installs from the Shopify App Store. Kindly: Payment Reminder Pro has the deeper published review base (31 vs 0), 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.
MailAction: Send Email in Flow typically suits early-stage and growth-mode teams based on its published review base (0 reviews). Kindly: Payment Reminder Pro typically suits early-stage and growth-mode teams based on its published review base (31 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.
Migration support varies by app and category. MailAction: Send Email in Flow and Kindly: Payment Reminder Pro 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 MailAction: Send Email in Flow" in each app's help center. AppRanks does not track migration tooling directly — this is a category-specific capability worth verifying before commitment.
