Originally Posted by dkmarsh
Quote
Drag & Drop or Move To… automatically deletes the copy in the IMAP mailbox

It automatically moves the copy in the IMAP Inbox to the IMAP Trash mailbox. Its complete removal from the server depends on the settings in Mail for that account. (At least in High Sierra, the range of choices for Erase deleted Messages: includes Never, After one day, After one week, After one month, and When quitting Mail.)

I am under the impression that "Erase deleted messages…" applied ONLY to messages in the Trash mailbox? At least that is how it appears to work in Mac OS 11 and 12.



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