I experience problems on Mac OS Mojave 10.14.2 with an Exchange Mailbox in Apple Mail. The Exchange Mailbox account only updates once I click Mailbox > Rebuild.

According to the Connection Doctor (Window > Connection Doctor), all connections work properly. Outgoing mail also works. With the same setup on my iPhone 6, iOS 12.1.13, I also experience no issues and the inbox updates promptly. The issue seems to be related to the Apple Mail on my Desktop computer, and to Exchange accounts only. My Gmail (IMAP) account in the same Apple Mail works as expected.

Please upvote if you experience(d) similar problems, and please help if you have the answer.

Thanks!