Best Email Clients & Webmail tools by public signals

These picks are computed from scored public evidence. Use the openness column in the ranking to separate OSI-approved, source-available, open-core, proprietary, and unverified-license tools.

Use Case Rankings

Ordered by ToolVitals score, health, shipping, confidence, and then adoption as a tie-breaker.

# Tool Health Shipping Openness Stars Score Status
01 Bulwark Mail
Self-hosted JMAP webmail client for modern mail servers.
88 98 OSI-approved OSS 570 93 Active
02 Mailflow
Self-hosted unified webmail client.
85 95 OSI-approved OSS 127 90 Active
03 FreshRSS
A free, self-hostable news aggregator…
86 83 OSI-approved OSS 15.2k 87 Active
04 TymeSlot
Open-source meeting scheduling platform.
78 93 License unknown 102 87 Active
05 FairEmail
Fully featured, privacy-friendly email app for Android.
83 83 OSI-approved OSS 4.4k 86 Active
06 matcha
A beautiful and functional email client for your terminal, built with Go and the charming Bubble Tea TUI library. Never leave your command line to check your inbox or send an email again!
74 100 OSI-approved OSS 911 86 Warning
07 neomutt
✉️ Teaching an Old Dog New Tricks -- IRC: #neomutt on irc.libera.chat
79 77 OSI-approved OSS 3.7k 84 Active
08 NeoMD
Minimal email TUI where you read with Markdown and write in Neovim.
72 89 OSI-approved OSS 252 84 Warning
09 useSend
Open source alternative to Resend, Sendgrid, Postmark etc.
77 52 OSI-approved OSS 4.3k 75 Warning
10 EmailThing
Web app for receiving and sending emails.
59 18 License unknown 279 55 Warning
11 Afterlogic Webmail Lite 8
Open-source webmail client for existing IMAP servers.
54 14 OSI-approved OSS 358 49 Warning
12 Nylas Mail
:love_letter: An extensible desktop mail app built on the modern web. Forks welcome!
44 18 OSI-approved OSS 24.7k 49 Critical