On my MacBook, mail disappears after being read. Where does it go?
When I read my email, and then select another email to read the previous mail is tagged as read. Any mail deemed junk, I delete.
The following day, all of the mail that I had read had vanished from my inbox, along with the deleted ones. Mail that I have not read remains in my inbox.
If I search mail by recipient/sender, I can see the read mail for that recipient/sender.
MacBook Pro 16″, macOS 15.6