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One alternative is to subscribe to iCloud calendar with your Exchange/O365 email accounts or any Outlook account, and then sync the same accounts in Outlook for Mac. See details:
Please come up with that support soon. It seems to be an anachronism that it does not already exist.
This cannot be rocket science, why is it not included in the normal maintenance/updates
Create a folder in Outlook that bundles "incoming mail" from all accounts as well as the "sent mails" from all accounts. This is done on my Outlook in Mac but not on my Outlook in Windows 10 on ParallelsKlaus von Grebmer supported this idea ·