Timo Sirainen

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Timo Sirainen
Timo Sirainen.jpg
Timo Sirainen at Sagrada Família
Spouse(s)Vilma Sirainen [1]

Timo Sirainen, born 1979, is a Finnish programmer also known under the handles "cras" and "tss". Sirainen is the original author of the IRC-client Irssi and the POP/IMAP server Dovecot. Sirainen lives in Helsinki, Finland.

In 2006, Sirainen began studying biotechnology at the University of Tampere.

He was formerly working for Rackspace Email & Apps[2] (formerly Mailtrust), where he continued the development of the Dovecot POP/IMAP server.

Since May 2011 he runs his own company offering commercial support for Dovecot. In March 2015, Dovecot Oy became part of the Open-Xchange Family.[3]


  1. ^ http://www.sirainen.fi/
  2. ^ "Creator of Dovecot Joins Mailtrust". Mailtrust's Blog. Archived from the original on 2010-08-27. Retrieved 2009-02-09.
  3. ^ "Open-Xchange and Dovecot announce merger to create world's leading open source messaging software provider". Archived from the original on 12 June 2015. Retrieved 18 June 2015.