Can't do that. I need certain emails to remain marked. That's my todo items.If found now a solution that works:Betterbird! A fork of T-bird. No issue there. Just moved all stuff like mails, filters, identities and it works flawless...
Some of the above fixes work but only for a short time... strange! Others not at all.I have thunderbird 128.2.0esr. But the problem came with 128.1.1esr, I believe.Marking messages unread before deleting worked fine for the first 4-6 messagesEmptying...