Temporarily "losing" messages until program restart. All those old messages mysteriously once again "unread." KMail resource, broken, online until next kde start.
Kmail2 is a mess bordering on unusability. Cant search messages without Nepomuk but we all know the mess that is. I use recoll on files without a hitch, no lags. I lived fine with kwallet until now and kmail kept my passwords for me. No more. Might need a different mail program unless our beloved kmail is brought back from the abyss.