SquirrelMail

SquirrelMail
Original authorsNathan and Luke Ehresman
DeveloperThe SquirrelMail Project Team
Initial release1999 (1999)
Stable release1.4.22 (12 July 2011 (2011-07-12)) [±]
Written inPHP, C
PlatformWeb platform
Available in56 languages
List of languages
Arabic, Bahasa Indonesia, Bahasa Melayu, Bangladeshi Bengali, Basque, Brazilian Portuguese, British, Bulgarian, Catalan, Chinese Simplified, Chinese Traditional, Croatian, Czech, Danish, Dutch, Estonian, Faroese, Finnish, French, Frisian, Georgian, German, Greek, Hebrew, Hungarian, Icelandic, Indian Bengali, Italian, Japanese, Khmer, Korean, Latvian, Lithuanian, Macedonian, Norwegian Bokmål, Norwegian Nynorsk, Persian, Polish, Portuguese, Romanian, Russian, Russian Ukrainian, Serbian, Sinhala, Slovak, Slovenian, Spanish, Swedish, Tagalog, Tamil, Thai, Turkish, Uighur, Ukrainian, Vietnamese, Welsh
TypeWebmail
LicenseGPL-2.0-or-later
Websitewww.squirrelmail.org
Repositoryhttps://sourceforge.net/projects/squirrelmail/

SquirrelMail is an open-source webmail application written in PHP. It provides a web-based interface for accessing email via the IMAP protocol and sends messages through SMTP. The project also includes a separate IMAP proxy server written in C. Both components are released under the GNU General Public License version 2 or later.

The last numbered stable release was version 1.4.22 in July 2011. Since then, the project has continued through SVN snapshots; the current stable branch (1.4.23-svn) is tested with PHP up to version 8.1. SquirrelMail was once widely deployed and included in the repositories of major Linux distributions, but its use has declined since the mid-2010s as hosting providers replaced it with Roundcube and other alternatives.