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 Main window of Claws Mail 2.7.1 | |
| Developer(s) | The Claws Mail Team |
|---|---|
| Initial release | May 11, 2001; 23 years ago (2001-05-11) |
| Stable release | 4.3.1[1]  / 24 February 2025 |
| Preview release | None [±] |
| Repository | |
| Written in | C (withGTK) |
| Operating system | BSD,Linux,macOS,Solaris,Unix,Windows |
| Type | E-mail client,news client |
| License | GPL-3.0-or-later |
| Website | www |
Claws Mail is afree and open-source,C/GTK-basede-mail client, which is both lightweight and highly configurable.[2][3] Claws Mail runs on bothWindows[4] andUnix-like systems such asLinux,BSD, andSolaris. It stores mail in theMH mailbox format. Plugins allow to read HTML mail, but there is none to compose HTML messages.[5]
Claws Mail is also anews client andRSS aggregator. Further features – integrated or supplied viaplugins – include:[6][7]
Development started in April 2001 asSylpheed-Claws off the development version ofSylpheed, where new features could be tested and debugged. In August 2005 Claws Mail forked completely from Sylpheed.
Claws Mail looks simple, but is packed with advanced tools for power users. New users might be happier with Mailbird or Thunderbird, but you'd be hard pressed to find a better tool for taming multiple inboxes.
The Claws Mail developers try hard to keep it lightweight, so that it should be usable on low-end computers without much memory or CPU power.
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