Compare software

chasquidHaraka
Free

Free and open source under the Apache 2.0 licence.

 Free

Free open-source software.

Linux, Self-hosted Linux, Self-hosted, Command line
  • Secure defaults that prevent open relays
  • Virtual domains with per-domain users and aliases
  • High performance SMTP handling
  • Flexible plugin system in JavaScript
  • Aimed at individuals and small groups rather than large deployments
  • Needs Dovecot or similar for mailbox access
  • Handles SMTP only; needs other software for mailbox access
  • Customisation requires JavaScript knowledge
Downloadable app, Self-hosted Downloadable app, Self-hosted
Open source Open source
License: Apache-2.0 License not stated
No account needed No account needed
Not stated if it works offline Not stated if it works offline

Checked October 2, 2026

Checked October 1, 2026

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