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I have a few Exchange accounts set up in Mail that are working fine. Deleting sends the mail to the Trash folder, archiving sends the mail to the Archive folder. However, one of the accounts won't let me archive. The mailbox has a folder under the "Archive" section on the sidebar, and I can manually drag messages to it, but when I click Archive I get the following:

The message “[subject]” could not be moved to the mailbox “(null)”

The destination mailbox does not exist.

I would assume this means that Mail can't find the appropriate folder to put the message in, but since the account has a folder under the Archive heading, I'm confused.

Any ideas?

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Had the same problem on Mac OS X Mavericks 10.9.1 – khrf9 Jan 10 '14 at 19:03
up vote 3 down vote accepted

I had the same problem. I went into Preferences > Accounts and deselected "Enable this account." Then, I quit Mail and restarted it. I went back into Preferences > Accounts and selected "Enable this account" and it all started working.

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Fantastic! This works. Thanks. – Matthew Sep 21 '12 at 20:56
Thank you very much! It helped me with the same problem! – khrf9 Jan 10 '14 at 19:02

Rename the Archive folder on Exchange

Seems some sort of bad situation manifested itself between Mail and the Exchange server. I had to Rename the folder named Archive on the server to OldArchive, then attempt to archive a message and allow Mail to recreate the Archive folder. Then I copied all the mail in OldArchive to the new Archive.

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