My father does not pay attention to his email much, he has over 80,000 emails in his inbox! How do I create a rule to automatically delete unread emails over 1 year old? I can create a rule to delete any email over 1 year old, but I didn't want to delete anything read that he may want to keep.
MacBook Pro 13", macOS 10.14
I would do it manually in chunks of say ~10,000
Too many at once might bog it down.
Scroll down, make a selection—hold the Shift key before you make the next selection and it will highlight everything in between.
I would start on the ISP server side and delete the emails there first. That way, Apple Mail (depending on how it is configured) won't replace what you have removed on the Mac, with a new synchronization of 80K emails from the server.
Deleting over 80,000 unread emails
