This quick, easy to follow guide will help you to grant full-access permissions to an O365 mailbox in minutes.


To get started open a remote session using this PowerShell:


$Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri -Credential $o365cred -Authentication Basic -AllowRedirection
Import-PSSession $session


In our first example, we’ll delegate full access  to a single mailbox. In this case, so that Jim has full access to Billy’s mailbox:


Add-MailboxPermission -identity [email protected] -user [email protected] -AccessRights FullAccess


In this example, we’ll give Jim full access to all mailboxes in the organization:


Get-Mailbox | Add-mailboxpermission -user [email protected] -AccessRights FullAccess


And that’s it, you’re done!


About the Author
Founder , Ayrne
I am an artist, traveler, and lover of the beauty of life
  • Show Comments (0)

Leave a Reply


This site uses Akismet to reduce spam. Learn how your comment data is processed.

Notify of

Support our site

If you find this site helpful, please consider using our affiliate links. Ayrne may earn a small commission from your purchase, but it won’t cost you anything at all and in some cases, it may even save you money! We use affiliate links instead of banner ads to provide you with a cleaner, more focused experience on our website.