How to Create Shared Mailbox only in Microsoft Office 365?

Objective: Create a new shared mailbox in just Office 365 and not in Active Directory.

Steps:

1. Navigate to Management > Mailbox Management > Create Single Shared Mailbox.
2. Select the Domain where you want to create the shared mailbox.
3. Check the Office 365 checkbox and uncheck the Active Directory checkbox.
4. Under the General tab, enter all the mailbox details like name, description, e-mail ID and the location of the mailbox.
5. Similarly, enter the necessary details required in the Contact tab too.
6. In the Exchange tab, configure the Exchange server details like Email server, alias e-mail ID, proxy mail ID, Mailbox storage limits and policies.
7. Configure Delegation settings and Custom attributes in the respective tabs.
8. You can modify the DirSync settings in the Office 365 tab.
9. Click Create.