Claws Mail

Claws Mail
Main window of Claws Mail 2.7.1
Developer(s) The Claws Mail Team
Initial release May 11, 2001 (2001-05-11)
Stable release 3.16.0 (December 17, 2017 (2017-12-17)) [±]
Preview release None [±]
Written in C (with GTK+)
Operating system BSD, Linux, macOS, Solaris, Unix, Windows
Type E-mail client, news client
License GNU GPLv3

Claws Mail is a free and open-source, GTK+-based email and news client. It offers easy configuration and an abundance of features. It stores mail in the MH mailbox format and also the Mbox mailbox format via a plugin. Claws Mail runs on both Windows and Unix-like systems such as Linux, BSD, and Solaris.


Formerly known as Sylpheed-Claws, it started in April 2001 as the development version of Sylpheed, where new features could be tested and debugged, but evolved enough to now be a completely separate program. It forked completely from Sylpheed in August 2005.


Claws Mail provides many features,[1] among them are:


Claws Mail is unable to send HTML mail. This is intentional. According to the developers, this decision has been made after a discussion, although no details are given.[4] It is still possible to receive HTML mail using Claws Mail.


Claws Mail's features can be extended with plugins,[5] such as

See also


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