mu4e in Emacs works well, or Notmuch, or even Gnus with a local Maildir. Or Mutt if you're more into that. None of these applications can be that much harder

mu4e in Emacs works well, or Notmuch, or even Gnus with a local Maildir. Or Mutt if you're more into that. None of these applications can be that much harder than flying the capsule can they?