Archive will automatically expand by 10gb when it reaches capacity
Required Licences
- Exchange Online (Plan 2) - $13
- The setting will activate with an EOP1 but it won’t expand past 110gb
- Exchange Online Archiving ($5)
Clients will still receive notifications that they’re archive are about to fill up.
See Check Archive Mailbox Size
How to check
One Person
Enable-Mailbox (Read-Host "Enter Email") -AutoExpandingArchiveGet-Mailbox (Read-Host "Enter Email") | FL AutoExpandingArchiveEnabledWhole place
Set-OrganizationConfig -AutoExpandingArchive