aerc[1]'s design is the main reason why I use it over mutt, even though mutt has more features. No idea what they use behind the scenes for their TUI, but you c

aerc[1]'s design is the main reason why I use it over mutt, even though mutt has more features. No idea what they use behind the scenes for their TUI, but you could take a look at their source code[2]. [1] https://aerc-mail.org/ https://aerc-mail.org/ [2] https://git.sr.ht/~sircmpwn/aerc https://git.sr.ht/~sircmpwn/aerc