I switched recently from neomutt to aerc and yes, if you want less complicated configuration, it's a great pick. I find it less buggy and just best designed overall.
I never tried Gmail or Exchange on it, but this should have some helpful info on that: https://man.sr.ht/~rjarry/aerc/providers/
I use PDF Arranger a lot for that
https://github.com/pdfarranger/pdfarranger