Additional comment to workaround with deleting Inbox.ev-summary file in ~/.evolution/mail/local. First, you should turn off your accounts so no new mail would come in or any checking for new mail would not accour. Then, remove Inbox.ev-summary and quit Evolution. Then launch Evolution again and let it create new Inbox.ev-summary. It takes few minutes for at least thousand mails so take your time. Let it sync several times, pressing "Send/Recieve" (might be not necessary) and then turn on your account(s) one after one.
My problem was that deleting this file and letting checking Evo mail once in two minutes didn't let create Evo this summary file, so previous workaround didn't work fully. -- evolution bug, "Summary and folder mismatch, even after a sync" https://launchpad.net/malone/bugs/27014 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs