[MlMt] Make IMAP Account read-only, not able to send new mail from

[Martin Guddat]

Hi all,

I have a mail account I just watch and never send mails with (the 
outgoing credentials are not even configured). Nevertheless, from time 
to time when I write a new mail, this account is selected as „from“ 
account. If I do not notice and send, the mail rots in outgoing until I 
notice my mistake and correct.

Is there a way to remove an account from the possible list of senders? I 
have not found this anywhere.

Thanks!

Martin