A command-line email client written in Rust for managing mail over IMAP, SMTP, JMAP, Gmail and Microsoft Graph.
7.6K+36 this week266RustApache-2.0Updated 19 hours ago
2 alternatives
2 best open-source alternatives to Thunderbird (2026)
Looking for a free, open-source alternative to Thunderbird? These 2 projects can replace it. Each one passed our quality screening and is explained in plain words, so you can compare stars, license and maintenance at a glance.
Quick comparison
| Project | Stars | License | Last commit |
|---|---|---|---|
| pimalaya/himalaya | ★ 7.6K | Apache-2.0 | 19 hours ago |
| floatpane/matcha | ★ 1.2K | MIT | 7 days ago |
A terminal email client built with Go and Bubble Tea, supporting multiple accounts, rich content and a plugin system.
1.2K+23 this week93GoMITUpdated 7 days ago
FAQ
- Is there a free, open-source alternative to Thunderbird?
- Yes. The most popular open-source alternatives to Thunderbird on Repolode are himalaya, matcha.
- Which Thunderbird alternative should I choose?
- himalaya has the most GitHub stars and is released under Apache-2.0. Compare the license and last commit of each option in the table above before choosing.
How this list is made: AI reads each project's documentation to match it with products it can replace, every project passes our quality screening, and the list is ranked by GitHub stars. Stars updated Nov 6, 2026. How Repolode works