I have a dozen or so different accounts, mostly for incoming mail of certain
types. I only use 3 on a regular basis for outgoing messages.
When I create a new message, every one of the accounts appears in the
dropdown on the Sender line, and I have to pick carefully to get the right
one.
I would like to exclude most of my accounts from this list.
I have already tried unchecking "Include this account when receiving mail or
synchronizing" and that didn't help.
Suggestions, please?