Export Shared Mailbox Permissions

The link below is to a blog post about a script a reddit user created to pull down all shared mailboxes and their associated members. You can already view shared mailbox information, specifically permissions, by using the Exchange Admin Center. However, you can only review permissions one mailbox at a time. Microsoft also lacks a well formatted output that will show you permissions such as full access, send as, and send on behalf.

The script linked to in the article will format the output of all shared mailboxes, the members, and their subsequent permissions. And the script supports more advanced filtering too through additional PowerShell cmdlets.

Link to article with detailed instructions and information:

Export Shared Mailbox Permission Report to CSV using PowerShellOffice 365 Reports

Link to download the script itself

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