I go through this routine about once a year. Somehow, I get it in my head that a Mutt setup would be better than the multiple webmail setup I currently deal with (Gmail and Office 365). Sometimes I do a pure IMAP setup, sometimes using offlineimap to mirror the entire mailbox. Each time, I realize how much html email there is and how difficult it is to quickly review attachments. Both of these can be handled well with a good mailcap file, but the extra hassles just make it just a bit too difficult to switch over completely. I always end up back with webmail after a few days.

Maybe one time, I'll be able to stick with mutt.