I'm a mutt user, but I have used Pine. Less is more and either or those are great MUAs. Minimal yet packed with features. You can read HTML fine in mutt. Don't

I'm a mutt user, but I have used Pine. Less is more and either or those are great MUAs. Minimal yet packed with features. You can read HTML fine in mutt. Don't listen to the naysayers. And, speaking of lesser used mail readers. I was also fond of Slypheed years ago. It's a GUI, but very minimal. You may like to try it sometime too. https://sylpheed.sraoss.jp/en/