Over the last 6-12 months, one of our employees Bron Gondwana has put a lot of effort into improving our IMAP/POP server, which is the open source cyrus IMAP server. Most of the improvements were rolled out to FastMail customers a few months ago and documented in this blog post.

Today however marks the official release of cyrus
, which includes all of Bron’s changes and numerous other improvements from other contributors. Congratulations everyone involved with the cyrus project!