I am trying to fill my abook address book with addresses, but it is tedious as a new user of mutt. So the easiest way would be to simply add all "To:" addresses from my
Sent mail folder to the abook address book.
But this doesn't work, apparently only
From: addresses are supported. Am I overlooking something or how do I populate my abook address book efficiently with e-mail addresses I already used in the past?