Apparently according to some information I read they don't check server side due to bugs in some IMAP servers. So a good work around would be for them to download the complete set of headers for each email instead... I am not sure why they don't already do that or at least have an option to do so, Evolution already does this.
-- After-the-fact Filters on custom header won't match for IMAP messages https://bugs.launchpad.net/bugs/119899 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs