Dovecot is an open-source email server for IMAP, POP3 and LMTP, with a local delivery agent, optional Sieve filtering and support for the mbox, Maildir and its own dbox storage formats. The project, started in 2002 by Timo Sirainen, emphasises security, standards compliance and speed. The Community Edition is freely available under open-source licences, mainly MIT and LGPLv2.1. For large service providers there is Dovecot Pro, a commercial edition. Dovecot is installed and operated by the organisation itself.
Dovecot originates in Finland and is part of Open-Xchange, whose parent country is Germany; dovecot.org names Open-Xchange as copyright holder. Because the software is open source and runs on your own servers, your organisation decides in which region the mailboxes are located, for example in the EU. Dovecot is therefore a building block for an independent mail environment without reliance on a non-European cloud provider. Commercial support for Dovecot Pro is provided through Open-Xchange.