Hi,

Could it be feasible to support message threading (with the current design) *without* server THREAD support?

There is a feature request for IMAP thread support in hmailserver:

http://www.hmailserver.com/forum/viewtopic.php?f=2&t=16893

someone said this:

Threading support should cache thread information in some permanent (persistent) form. If server just implements threading rfc, it will be slow and roundcube won't be able to use on large folders.

Only some IMAP servers cache information in a way which is useful for threading in webmail clients.

Thanks!!