mu4e has simplified my life enormously.
I can do things no other would let me do easily. Namely: create automatic exams with latex, each for a different address and send each to its corresponding pupil, all in a single script.
Attaching is a breeze, by the way.
- magit :: everyday things are just a key away, less common things are visible, complex things are possible
- Org-mode :: whole life in plain text (for some brain types it enables almost impossible to achieve otherwise + Org-Babel + emacs-jupyter