Mail is a free, open-source email and calendar app for Windows, macOS and Linux. Built from the ground up for speed. Flectar Mail delivers native performance, instant startup, and as little as 20 MB of RAM. It has 1,266 GitHub stars and is released under the AGPL-3.0 license.
- Official
- Linux
- macOS
- Windows
- Email & calendar
- Actively maintained
About Mail
Email, made fast again Built from the ground up for speed. Flectar Mail delivers native performance, instant startup, and as little as 20 MB of RAM.
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What is Mail?
Mail is a free, open-source email and calendar app for Windows, macOS and Linux. Built from the ground up for speed. Flectar Mail delivers native performance, instant startup, and as little as 20 MB of RAM. It has 1,266 GitHub stars and is released under the AGPL-3.0 license.
Is Mail free and open source?
Yes. Mail's source code is public on GitHub under the AGPL-3.0 license, which is OSI-approved or FSF-free, so you can use, copy and change it for free.
How do I install Mail?
Download the installer for Windows, macOS and Linux from its GitHub Releases page (latest: v0.1.0-alpha.6).
Is Mail still maintained?
The repository's most recent commit was on Sep 30, 2026. appsgit only lists apps whose repository had a commit in the last six months.