Thunderbird 128.13.0esr running on Mac 15.5. I have Thunderbird configured to save a copy of outgoing mail in my Sent Items folder. That's what I want almost all the time. However, there are occasions when I want to send a mail without any copy being saved. It is too inconvenient to change the general setting just for that mail, or to delete it from the Sent Items folder and then again from the Deleted Items folder. The perfect solution would be a checkbox "don't save a copy" on the composition panel. I don't see any option like that, but is there one? Or some other convenient solution? Maybe someone has written an add-on for it? Thanks, Brendan.