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Delta ChatDeltaTouch
Free

Free and open source under the GPL 3.0. Free chatmail relays are provided, or use any…

 Free

Free and open source under GPL-3.0-only.

Windows, macOS, Linux, Android, iOS Linux
  • Works with any email account, or with a provided chatmail relay
  • Reaches people who do not use Delta Chat at all
  • Decentralized messaging
  • Compatible with official Delta Chat clients
  • Encryption only applies when the other side supports Autocrypt
  • Email metadata such as subject and timing is visible to mail servers
  • Linux distribution is available through Flathub.
Downloadable app Downloadable app
Open source Open source
License: GPL-3.0 License: GPL-3.0-only
No account needed Not stated if an account is needed
Works offline Not stated if it works offline

Checked September 21, 2026

Checked October 8, 2026

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