There are a number of functions that you need to use PowerShell to do in Office 365.

One of these functions is to create shared mailboxes, as the web gui does not allow you to do this.


This guide will teach you how to create a shared mailbox using powershell.


You need to get the following information before you create the shared mailbox:

Variable Value (example shown)
<shared mailbox alias> sharedmb1
<shared mailbox display name> Shared Mailbox1
<shared mailbox email>


Implementation – Simple Method

This is the simplest method to create a shared mailbox.  If you are going to be creating a lot of these, you might be best checking out the best practice method.

Create Shared Mailbox
New-Mailbox -Name "<shared mailbox display name>" -Alias <shared mailbox alias> –Shared

Apply the correct quota settings
Set-Mailbox <shared mailbox alias> -ProhibitSendReceiveQuota 5GB -ProhibitSendQuota 4.75GB -IssueWarningQuota 4.5GB


New-Mailbox -Name "Shared Mailbox1" -Alias sharedmb1 –Shared
Set-Mailbox sharedmb1 -ProhibitSendReceiveQuota 5GB -ProhibitSendQuota 4.75GB -IssueWarningQuota 4.5GB


To access these mailboxes you are going to need to assign permissions to your user account. Click on the related links below to complete your goal:



Modern Melee can help you with your administration of Office 365 cloud services. Click here for more information
This is my site Written by Tim Jolley on March 12, 2012 – 2:42 pm