I'm not sure what you mean by this. Most people who use mutt typically use something like notmuch, mailfilter, procmail or imapfilter to implement rules that a

I'm not sure what you mean by this. Most people who use mutt typically use something like notmuch, mailfilter, procmail or imapfilter to implement rules that automatically move certain mail into certain folders. For doing a move of multiple messages into a folder on an ad-hoc basis in the mutt UI, you select your messages however you want (eg using a regex over subject or sender or whatever) and use semicolon to modify your move command to mean "move all selected" rather than just "move this message".