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Communication · free alternative

Thunderbird

Desktop email, calendar, and contacts with no account lock-in.

Licence
MPL-2.0
Platforms
macos, windows, linux
Self-hostable
No
Pricing model
free
Language
C++
Repo activity
Last commit October 26, 2026
GitHub stars
197
Last verified
October 24, 2026

Replaces

The paid products this tool can replace, at their public list price.