I have an Outlook email address that works very slowly over IMAP. It's practically unusable with Mutt's IMAP feature.
It works much better if I fetch the emails with fdm and use Mutt to manage them locally. The problem with that, however, is any operations performed on the emails - such as deleting or moving them to another folder - aren't synced with the server. Then, when I use Mutt on another computer with the same account, I have to do it all over again. Is there a way I can use IMAP to sync whatever I've done to the server but still store the emails offline so I don't have to use IMAP to read them?