It would be nice if the template syntax could be extended to allow specifying attachments. In my case, I currently use several standard templates with attachments (in another email client I'd like to switch from to aerc) which are sent to students when they ask predictable questions.
This is a partial overlap with #108, as one could could then also choose attachments interactively via an external tool using exec.
Koni Marti referenced this ticket in commit d29c9d1.