MAC MAIL DOWNLOADING EXCESS MESSAGES?
Running macOS MOJAVE (10.14.3). An odd issue has arisen wherein my Mac Mail is constantly displays a "Downloading Messages" message when no new emails are being downloaded. It often displays that several 1000 messages are being downloaded. Appears to be some sort of sync issue but it is using a lot of memory and causing the computer to run hot!.
MacBook Pro 15", macOS 10.14