On 24.9.2013, at 10.36, Urban Loesch <bind@enas.net> wrote:

today we found this blogpost:

http://blog.fastmail.fm/2013/09/17/ios-7-mail-app-uses-multi-folder-body-sea...

Have you any idea if this could impact performance of dovecot using mdbox format with 10MB per file size and zlib enabled?

http://wiki2.dovecot.org/Plugins/FTS would be helpful here. Dovecot could also do some extra optimizations, but those get a bit complex.