I am a very loyal mutt user. Coupled with mbsync (for offline imap) and notmuch (for indexing, threading and address completion) I think it's a great MUA.
I obsessively measure wakeups/s in powertop for every application I use, and the above setup is very good.
If you want to try other things you can look into the mutt-kz fork (which replaces internal search commands with notmuch).
There is also a notmuch curses client, but I find mutt+notmuch superior.
Mu is a notmuch alternative worth considering. Their emacs client is excellent.
Finally, also if you use emacs, gnus is perhaps the most powerful email client ever. Steep learning curve, though. It's a bit different to everything else, as gnus has been built as a news reader. It treats mail as news, but this has some great advantages I think, as long as you can adapt your mindset. Also Org integration.
Gnus is the only thing that might make me switch away from mutt.
Gnus is unbeatable for reading mailing lists -- it basically lets you take the many optimizations and workflows developed in various newsreaders for managing large Usenet newsgroups of which you only want to read a small subset, and apply them to mailing lists. For reading mail other than big mailing lists, it's a little awkward. I used it as my main email client for years, but have drifted away.
Using email less, honestly. Because I can't get to my home email from work, I've largely stopped following most of the mailing lists I was on, just catching up periodically. I've played with mu4e, and I'd probably use it more if I spent more time on a computer and network under my full control.
For my reduced email needs, I mostly use K-9 Mail (Android) and self-hosted RainLoop (web). For work mail I use Outlook.
I obsessively measure wakeups/s in powertop for every application I use, and the above setup is very good.
If you want to try other things you can look into the mutt-kz fork (which replaces internal search commands with notmuch).
There is also a notmuch curses client, but I find mutt+notmuch superior.
Mu is a notmuch alternative worth considering. Their emacs client is excellent.
Finally, also if you use emacs, gnus is perhaps the most powerful email client ever. Steep learning curve, though. It's a bit different to everything else, as gnus has been built as a news reader. It treats mail as news, but this has some great advantages I think, as long as you can adapt your mindset. Also Org integration.
Gnus is the only thing that might make me switch away from mutt.