FlowSend ‑ Flow Mail App vs Postflows
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Nov 5, 2026 for FlowSend, Nov 10, 2026 for Postflows.
The short answer
- Paid plans start at $9.99/month for FlowSend and $89/month for Postflows.
- FlowSend lists 2 features Postflows’s listing doesn’t mention, including Welcome emails, Win-back emails.
Head to head
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
BFCM Offer
- · 30-day money-back guarantee
- · 500 Free Flow Email Actions
- · Flow Automation by FixMyStore.com
Professional
- · $1 per 100 extra emails
- · 500 monthly email actions + 500 free
- · 90 day log retention
- · Audit your current Shopify Flow
- · Custom SMTP support
- · Flow Automation by FixMyStore.com
Advanced
- · $1 per 100 extra emails
- · 180 day log retention
- · 2500 monthly email actions + 500 free
- · Audit your current Shopify Flow
- · Custom SMTP support
- · Flow Automation by FixMyStore.com
Enterprise
- · 365 day log retention
- · Audit your current Shopify Flow
- · Custom SMTP support
- · Enterprise priority queue
- · Flow Automation by FixMyStore.com
- · No overage charges
Starter
Growth
Scale
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureFlowSend lets you send fully branded transactional emails directly from Shopify Flow using your own SMTP provider or website domain. Send internal email action for workflow with flow, instead of shopifyemail.com Instead of relying on basic notifications, you can trigger custom emails for orders, B2B workflow, internal alerts, approvals, fraud checks, or any automation you build inside Flow.
Shoppers want to know where their order is, and every unanswered question becomes a support ticket. Postflows turns live carrier tracking into 8 shipping events, from order placed to delivered. Each event goes straight to the email or SMS platform you already use, where it can start a flow, so brands send branded shipping updates without switching tools.
- Use FlowSend to send emails directly from Shopify Flow workflows
- Connect your own SMTP provider securely
- Create dynamic templates using Liquid variables
- Add CC, BCC, and custom Reply To addresses
- 10+ delivery event triggers for Klaviyo
- Branded tracking page with origin masking
- Automated WISMO ticket reduction
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 |  FlowSend |  Postflows |
|---|---|---|
| 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 | FlowSend | Postflows |
|---|---|---|
| App Store rating | 4.2 ★ | Not published |
| App Store reviews | 6 | Not published |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
FAQ
FlowSend and Postflows: common questions
- Is FlowSend or Postflows cheaper?
- Paid plans start at $9.99/month for FlowSend and $89/month for Postflows. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- What features does each app list that the other doesn’t?
- FlowSend lists 2 the others don’t mention, such as Welcome emails, Win-back emails. Postflows lists 1 the others don’t mention, such as APIs and webhooks. A feature missing from a listing may still be supported; this compares what each App Store listing says.
- 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 Nov 5, 2026 for FlowSend, Nov 10, 2026 for Postflows; 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 Nov 5, 2026 for FlowSend, Nov 10, 2026 for Postflows. 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.