It’s very easy to create an Office 365 shared mailbox using Easy365Manager.
Some admins prefer to create shared mailboxes as cloud only, others prefer to have it synchronized with an on-prem user account (read this article for more info).
We definitely think having a synchronized on-prem account behind your shared mailboxes is the best solution. You have a full overview of your resources in your local Active Directory and using Easy365Manager you can manage everything in AD Users & Computers using this approach.
Open Active Directory Users & Computers with the Easy365Manager extension and perform the following steps to create an Office 365 shared mailbox.
Create a new user account in your on-premises Active Directory and make sure to configure the country (click Apply after setting the country info):
Go to the Office 365 tab and click Create in Office 365. Select Shared Mailbox in the pop up menu:
The status will change to “Creating in Office 365…” and after a few seconds you will see the properties of the user account:
This means the shared mailbox user account has now been created in Office 365 and the mailbox is being created. Please allow a short moment for Azure to provision the mailbox.
To give your mail users access to the shared mailbox go to the Mailbox tab and click Mailbox Delegation: