Been running Mutt for my work email for about a year now. What started as a simple experiment has turned into a pretty long-running affair. Works well for me, but I'm not a massively heavy user.
Once I got the hang of it the speed and ease of searching and general mailbox management is pretty great.
One thing it has made me realise is just how many people rely on HTML email though. It's a disease.
@sullybiker
Every now and then I think it might be nice to have some basic formatting, and I look at wrapper scripts that pipe your outgoing messages through some kind of markdown parser, but these always seem to cause one form of trouble or other.
@david I mailcap the HTML stuff through lynx which seems to work okay.
I have format=flowed on too, it's really funny to me how much trouble plain text causes mail clients; isn't it strange?
@sullybiker
I find I can read HTML emails all right: I have an entry in my mailcap to have w3m turn them into plain text, and if that fails (or if the images become relevant), I can open them with Firefox.
For sending, I use plain text with format=flowed, which seems to render my paragraphs in the way people expect in most clients (though not the Gmail Android app 🙁).