Compare software

MailMateMailspring
Freemium

Uses a license key model, and the developer describes a Free Mode.

 Freemium

The client is free and open source. Mailspring Pro is a monthly subscription that adds…

macOS Windows, macOS, Linux
  • Extensive keyboard control
  • Markdown email composition
  • Unified inbox, snooze, send later, rules and templates in the free tier
  • C++ sync engine keeps memory and battery use down for an Electron app
  • macOS only
  • Current 2.0 version is still a beta
  • Read receipts and link tracking are paid, and are tracking features
  • Electron, so still heavier than a native client
Downloadable app Downloadable app
Closed source Open source
License not stated License: GPL-3.0
No account needed No account needed
Not stated if it works offline Works offline

Checked September 23, 2026

Checked September 21, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.