don’t really have a favorite – started with Thunderbird a long time ago but switched over to webmail fairly early on
now that I’ve started to build a new system, I started to look around at the various options (and maybe getting off webmail or at least having local storage “backup”) – the standard GUI clients (Thunderbird, Evolution, KMail, BlueMail, Mailspring) seem to be … fine – but none of them really stand out
recently stumbled across some nice screenshots of aerc and the idea sounds really appealing, but I’ve never had any contact with terminal email programs and found out they’ve followed a completely different evolutionary path than GUI apps (even terminology has diverged between the two) – GUI apps keep trying to be an all-in-one (email, contacts, calendar, tasks, …) whereas terminal programs almost seem to to favor a “balkanization” of effort – aerc looks like it’s grabbed a middle-ground, you can run it as standalone or go all in with a fully customized setup – problem I’m running into is I can find lots of “how” guides, but very little in the “what” or “why” side of things …