How Do I Import Contcts Into Outlook 2016 For Mac Average ratng: 8,6/10 4436 votes
A.pst file is the data file used by Outlook for Windows to archive your email messages, contacts, calendar items, tasks, and notes. You can import the.pst file in order to transfer messages from a Windows-based computer to Outlook 2016 for Mac or Outlook 2019 for Mac. In Outlook 2016 and Outlook 2016 for Mac, email messages, contacts, calendar items, tasks, and notes can be exported to archive files. You can import these files (.pst in Outlook for Windows and.olm in Outlook for Mac) into Outlook 2016 for Mac.
No confirmation received, but we're (almost) sure no hidden option exists to import PST content from Outlook 2016 for Mac into you O365 mailbox:-). 
Managed a workaround using a Windows device with Outlook 2016 instead.
Be aware that the import goes (pretty) fast, because items are loaded into you local cache. Then it will take aconsiderable time, even hours depending on the amount data, to get the local items synchronized into the online O365 mailbox. Check Outlook's Synchronization Status after a while, but also be aware that Outlook initially states 'All folders are up-to-date', only after while the status will change to synchronizing. Iphoto per mac os sierra. Give it time:-). If you restart Oulook in between give it time to see Synchronization Status changing, even when it mentions you are 'Connected to: Microsoft Exchange'.
If you initially tried to import the PST using Outlook 2016 for MAC, remove this local instance 'On My Computer', to ensure this stail version of items is not accidentally used to send and/or receive items. Hope this helps for others.