or use POP , POP3, whatever, which will delete the email off the server - which (unpopular opinion) is a feature not a bug.
Yes, one copy of each email;
yes, I don't want to handle each (any) email multiple times, even if the second is a once-a-week mass delete of have-processed-already emails.
Yes, one copy of each email; yes, I don't want to handle each (any) email multiple times, even if the second is a once-a-week mass delete of have-processed-already emails.