Archiving emails in Outlook for Mac creates copies of your email account from the server and stores them on your local computer.
Please note that Outlook for Mac saves the Archive file as an (.olm) file that can only be read on a Mac. Any information from your email account that you archive must be stored on your local hard drive and should not be stored on any cloud storage platforms. Storing .olm files on the cloud causes them to become unstable and significantly increases the risk of the archive file becoming corrupted.
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