Public folders aren't supported in the Graph API and given there legacy status I don't think they will be at any point in the near future so you will need to use EWS for any Public Folder applications. If your building a greenfield application the best advice is don't use Public Folders look at either SharePoint or Office365 Groups if its an email based application which offer much more functionally and future support and growth path.
How to get public folders using microsoft graph API
CybP
21
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Hi,
I would like to know, is it possible to get public folders using graph API ?
Thanks in advance.
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RobG Gray 1 Reputation point
2021-09-27T03:19:33.047+00:00 any comment on how EWS will access Public Folders when Basic Authentication is removed ?
OAuth appears to be only ExchangeOnline.
At the moment, our user mailboxes are at O365, with PF mailboxes OnPrem.