Claws Mail
Developer(s)The Claws Mail Team
Initial releaseMay 11, 2001; 22 years ago (2001-05-11)
Stable release
4.2.0[1] Edit this on Wikidata / 20 November 2023
Preview releaseNone [±]
Written inC (with GTK)
Operating systemBSD, Linux, macOS, Solaris, Unix, Windows
TypeE-mail client, news client
LicenseGPL-3.0-or-later Edit this at Wikidata

Claws Mail is a free and open-source, C/GTK-based e-mail client, which is both lightweight and highly configurable.[2][3] Claws Mail runs on both Windows[4] and Unix-like systems such as Linux, BSD, and Solaris. It stores mail in the MH mailbox format. Plugins allow to read HTML mail, but there is none to compose HTML messages.[5]


Claws Mail is also a news client and RSS aggregator. Further features – integrated or supplied via plugins – include:[6][7]


Development started in April 2001 as Sylpheed-Claws off the development version of Sylpheed, where new features could be tested and debugged. In August 2005 Claws Mail forked completely from Sylpheed.

See also


  1. ^ Paul Mangan (20 November 2023). "Claws Mail 4.2.0 and 3.20.0 Unleashed!!!". Retrieved 29 November 2023.
  2. ^ Cat Ellis (2017-05-27). "Claws Mail review. Manage multitudes of messy messages". techradar. 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.
  3. ^ Razvan Serea (2017-12-24). "Claws Mail". Neowin. 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.
  4. ^ "Claws Mail for Windows".
  5. ^ "General Information - Claws Mail FAQ".
  6. ^ "Claws Mail - Features".
  7. ^ "Claws Mail - Plugins".
  8. ^ Jon L. Jacobi (2012-07-10). "Linux Favorite Email Client Claws Mail Works Well on Windows". PCWorld.
  9. ^ "Claws Mail - vCalendar plugin".