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Exchange Online Public Folder Size

Copper Contributor

Hi Community,


I am looking for the exact public folder size limit on Exchange Online. 

There are documentation for Exchange 2013,2016 and 2019. but not for online?




2 Replies

For any similar questions, use the Exchange Online Service Description documents:


6 You are limited to 1,000 public folder mailboxes, and the maximum total size of all public folder mailboxes is 100 TB. Hierarchy Serving mailboxes are limited to 100 public folder mailboxes. 


Thank you for your response. But it does not state anything about the individual folder size limit. I am looking for that information.