MailFlow

Web · paid plans from $500/mo

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Freedom report

Two barsScore 7.0

Free tierA free tier is on its own pricing page
Open codeNo open-source code on record
Runs widely1 of 6 device platforms
DocumentedPlans, terms and facts published

MailFlow is ranked #23 of 143 in email clients on Freedom251. It runs on Web. There is a free plan. Paid plans start at $500/mo.

MailFlow plans and pricing

All plans

Personal & Open Source Free Free forever Unlimited accounts mailflow.sh · 23 Sept 2026

Business Use $500/mo One-time per installation All features included · No AGPL obligations · Modify and deploy privately · Direct email for business enquiries mailflow.sh · 23 Sept 2026

Compared on email clients

Free plan: Yes
App coverage: web
Unified inbox: Yes
Offline access: No
Scheduled sending: No
Calendar tools: No

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