Yeah, I don't know much about Evolution's internals either. I've just been using it. If @tom_s@friendica.ambag.es is right, I'd agree. It's a bit unfortunate if software just generously moves things around right from the get go, and with an untrained spam filter. It'd be better if that was opt-in, required a confirmation, or did this to newly incoming mails only.

I mean I have like 3 email clients, two different ones on computers and one on the phone. They can't all be moving mails around and interfere with each other. I do the spam filtering and sorting on the server and keep the clients as simple as possible.