if only one name is configured, use that for all addresses;
if other_names are configured, match those with the other_email addresses
-## notmuch
++ clicking on "id:Message-ID@example.com" in notmuch-show buffer should search for the referenced message
-+ Add folder keyword
+ ATM the Message-ID is clickable but results in composing a
+ new email addressed to the Message-Id (which 'looks like' an
+ email address) in message mode. Instead clicking or C-c RET
+ should search the referenced email and show it in a
+ notmuch-show buffer.
- Allows to search for messages in a specific folder.
+## notmuch
+ Index more headers. Some desired headers: