Where do I configure Mail to delete email on my email's server after I retrieve them down onto my MacBook? In older versions there's been a checkbox under Mail/Account Info but it doesn't seem to be in version 14.0.
MacBook Air 13″, macOS 11.2
It's under Trash Mailbox as described in Change Mailbox Behaviors preferences in Mail on Mac - Apple Support.
By the way merely reading an email message does not cause it to be deleted from the server. It is only marked as having been read. If you want the message to be deleted from the server you have to delete it. I don't recall any version of Mail that deletes a message upon reading it.
It's under Trash Mailbox as described in Change Mailbox Behaviors preferences in Mail on Mac - Apple Support.
By the way merely reading an email message does not cause it to be deleted from the server. It is only marked as having been read. If you want the message to be deleted from the server you have to delete it. I don't recall any version of Mail that deletes a message upon reading it.
Mail 14.0
