I looked around yesterday, but there isn't much choice that appears better. Thunderbird has the cross-platform advantage, but apart from that, MS Outlook isn't bad and performance is definitely better. Everything else I found did not really convince ...
Same problem here with drag & drop. Moving emails from inbox to a folder (IMAP) takes insanely long, like ~15 seconds for 5 emails. I'm thinking about moving away from Thunderbird for good (after having donated a couple of months ago ). V. 115.10.1 ...
