Timo Sirainen, born 1979,[1] 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 Tampere, 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 where commercial support for dovecot can be found.