The assistant scans each public folder mailbox every hour to ensure we do not inadvertently overfill a public folder mailbox and stop it from being able to accept new content for any public folder within it. We have a time-based assistant (known as PublicFolderSplitProcessor ) actively monitoring the public folder mailbox quota usage. The goal is to ensure you do not inadvertently overfill a public folder mailbox and stop it from being able to accept new content for any public folder within it. This process actively monitors your public folder mailbox quota usage. Let’s go through each one of them, shall we? Automatic public folder moves based on public folder mailbox quota usage Automatic public folder mailbox creation based on active hierarchy connection count.Automatic public folder moves based on public folder mailbox quota usage.If we were to peek behind the Exchange Online curtain, we would see two automated processes always running to make this happen: In Exchange Online we automatically perform the public folder mailbox management so you may focus your time managing the actual public folders and their content. Our on-premises customers have to create public folder mailboxes, monitor their usage, create new public folder mailboxes when necessary, and split content to different public folder mailboxes as their content grows over time. As you previously read, Modern public folders starting with Exchange Server 2013 are stored within a new mailbox type in the mailbox database.

When your public folder content migration to Exchange Online is complete or you create public folders for the very first time, you do not have to worry about managing many aspects of public folders.

Ibackup exchange public folder