Exchange Online Shared Mailbox Provisioning – New rules
Microsoft are changing some rules for our shared and resource mailboxes. As per the blog post (see link below) we need to assign Exchange Online Plan 2 license if the mailbox are bigger than 50 GB.
But we need to give ourselves a report of our mailboxes and which does need a license? See my PowerShell function to create an HTML report of all shared mailboxes in your tenant.
See the script at my GitHub: https://github.com/pthoor/PowerShell/blob/master/Exchange/Get-SharedMailboxSize.ps1
See more scripts at my GitHub: https://github.com/pthoor