FlowMailer ‑ Workflow Email vs TestFlow ‑ Email Templates
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 13, 2026 for FlowMailer, Sep 6, 2026 for TestFlow.
The short answer
- Only FlowMailer lists a free plan.
Head to head
Free
- · 30 days Sent Emails log retention
- · 500 transactional emails / month
- · All sender providers supported
- · Pre-built templates + template library
- · Works with development stores only
Starter
- · 10000 transactional emails / month
- · 30 days Sent Emails log retention
- · All sender providers supported
- · Custom SMTP support
- · Pre-built templates + Custom HTML
Growth
- · 30000 transactional emails / month
- · 60 days Sent Emails log retention
- · All sender providers supported
- · Custom SMTP support
- · Full template toolkit (Custom HTML)
Pro
- · 60 days Sent Emails log retention
- · All sender providers supported
- · Custom SMTP support
- · Full template toolkit (Custom HTML)
- · Unlimited monthly emails
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureSend transactional emails from Shopify Flow that look and feel like your brand, not generic notifications. Create branded email experiences, choose your preferred sender, and deliver consistent communication across customer touchpoints. FlowMailer helps automate customer emails with flexible templates, custom designs, and delivery insights, giving more control over your brand communication.
Email Template Manager helps merchants safely customize transactional notification emails before publishing. Use the Liquid-aware editor to update HTML, preview realistic customer and order scenarios, save checkpoint history, and compare screenshots before making changes live. The app supports customer, staff, order, shipping, return, gift card, account, and B2B notification templates.
- Adds a Send Email action to use in any Shopify Flow workflow
- Design or use branded email templates or build your own with custom HTML
- Flexible Sender Control, Connect with Gmail, Microsoft 365, SMTP & more
- Track delivery with clear sent, delivery status, and workflow performance
- Edit notification HTML with Liquid-aware code tools
- Preview templates with realistic order and customer data
- Save checkpoints and restore earlier template versions
- Compare desktop and mobile screenshots before publishing
All the numbers
Every figure, side by side
A green dot marks the app ahead on a measured figure. Estimates, gaps and apps that leave no storefront trace never take the lead.
Adoption
| Measure |  FlowMailer |  TestFlow |
|---|---|---|
| Detected stores | Not published | Not published |
| Net store change, 28 days | 0 | 0 |
| Stores added, 28 days | Not enough data | Not enough data |
| Big-brand share | Not enough data | Not enough data |
| Top store categories | Not published | Not published |
| Top store countries | Not published | Not published |
Reviews
| Measure | FlowMailer | TestFlow |
|---|---|---|
| App Store rating | Not published | Not published |
| App Store reviews | Not published | Not published |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | FlowMailer | TestFlow |
|---|---|---|
| Free plan | Yes | Not listed |
| Lowest paid monthly plan | $10/month | No monthly plan listed |
| Longest free trial | 5 days | Not listed |
| Plans listed | 4 | Not published |
Listing
| Measure | FlowMailer | TestFlow |
|---|---|---|
| Shopify category rank | #87(ahead) | #148 |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Sep 8, 2026 | Jun 15, 2026 |
| Languages | 1 | 1 |
| Developer | Seventh Triangle Consulting | Joe Pichardo |
FAQ
FlowMailer and TestFlow: common questions
- Is FlowMailer or TestFlow cheaper?
- Only FlowMailer lists a free plan. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- Where does this comparison’s data come from?
- Shoplist crawls Shopify storefronts to detect which apps each store runs, and reads each app’s Shopify App Store listing for reviews, pricing, features and integrations. Store counts are as of Oct 13, 2026 for FlowMailer, Sep 6, 2026 for TestFlow; estimated figures are labeled.
How Shoplist compares apps
Store counts come from Shoplist’s crawl of Shopify storefronts, which detects the apps each store runs; they are as of Oct 13, 2026 for FlowMailer, Sep 6, 2026 for TestFlow. Reviews, ratings, plans, features and integrations come from each app’s Shopify App Store listing. 28-day figures are labeled when estimated, and a figure that is missing or estimated never decides who leads. Read the methodology.