I've given up on using M2 for IMAP mail. Ok, I didn't give it long (just a day), but there were just too many limitations. Fair to say that part of the problem is probably my dreadful email management, and my tendency to hoard everything. So with some 300 folders, I decided to download/subscribe-to just a small proportion of them (came to about 200 MB). Then I found I couldn't transfer anything to a folder I hadn't subscribed to. That's just crazy. When I'm at home I don't need everything… usually just an inbox (which I store locally on Mulberry). So I'm used to thinking, oh I should file 'this' there and I just drag the mail to the right folder. I can do this on-line, off-line, disconnected or whatever with Mulberry. It all synchs when I next check mail (or immediately if I'm connected). With Opera, I have to subscribe fully to the relevant folder, drag the message to TRASH :faint: and then drag it to the correct folder. Sorry… that just ain't a sensible way to work.
It'd be different if I was starting with Opera from scratch and didn't have a folder system already well established. But unpacking that is just too much, and I guess a lot of business users will hit the same problem. It's a shame. I'd really like to say that M2 is the bees knees, but I guess we'll have to wait a while.