Guide to Create a Shared Mailbox in Office 365

Aftab Alam
Aftab Alam linkedin | Updated On - November 03, 2022 |

Read time 6 minutes

Each employee gets a professional email account that he/she uses to communicate with the clients and team members. The email account ensures the identity of the sender and receiver. But some email accounts are not meant for employees, but they are used for different purposes. You may be familiar with some of such email accounts like,,, etc.

All these email IDs get a lot of emails, and a single person cannot manage such large amount of mails. So, it is required that multiple users work collectively on them. In Exchange Server or Exchange Online, these shared email IDs are known as shared mailboxes, and several users can receive and send email from the shared mailboxes. The benefit of using a shared mailbox is that when a user replies to a specific email, then the sender will receive the message on behalf of the shared mailbox and not from the user’s mailbox. Experts also recommend to export Office 365 mailboxes to PST including Shared mailboxes to keep all the data secure from any malicious attacks.

Shared mailbox also has a shared calendar where each member can input their appointments. So, if you want to have a meeting with your team member, then you can check the calendar and see when that member is free.

Let’s see the step-by-step process of creating a new shared mailbox in Office 365 and adding members to it.

Create a Shared Mailbox in Office 365 Admin Center

Step 1) First, log in to Office 365 Admin Center using the administrator credentials. Click the Admin option in the Apps menu.

Step 2) Under Groups, click shared mailboxes.

Step 3) Here, click ‘Shared mailbox’ button.

Step 4) Provide a name to the shared mailbox and give an email account.
Finally, click Add.

Step 5) A message shows ‘The shared mailbox was created. It may take a few minutes before you can add members.

You can click view details to get the information about the shared mailbox.

The properties of the shared mailbox are Name, Email, Email Alias, Email forwarding, automatic replies, sent items, email apps, litigation hold, members, show in global list. You can edit all these properties.

Step 6) To add members, click Edit option.

Step 7) Click Add Members button.

Step 8) Click the check-box before of the user which you want to add in the shared mailbox. Click Save.

Step 9) A message shows that ‘Shared Mailbox members were successfully updated.’

The message also shows that the changes will appear in the Outlook and OWA within 60 minutes. So, after 60 minutes you can check your Outlook applications and see a new shared mailbox in it.

Create a shared mailbox with Exchange Online PowerShell

It is the second method to create a shared mailbox (by using the Exchange Online PowerShell). Here is the process –

Step 1) First create a mail-enabled security group and provide a proper name.
Step 2) Connect the PowerShell with the Exchange Online.
Step 3) Run the New-Mailbox command.

New-Mailbox -Shared -Name “Contact” -DisplayName “Human Resource Department” -Alias Customer | Set-Mailbox -GrantSendOnBehalfTo HumanResource
Add-MailboxPermission -Identity “Human Resource Department” -User HumanResource -AccessRights FullAccess -InheritanceType All

Create a Shared Mailbox in Exchange Admin Center

You can create shared mailboxes from Exchange Admin Center also. Follow the steps:

  1. Login to Exchange Admin Center and follow Recipients>>Shared>>Add.
  2. Input the data into the fields – Display Name, Email address.
  3. For providing Full Access or Send As permissions, click Add and choose all the users which you want to provide the permission level.
  4. Finally, click Save option and create a new mailbox.

Permissions for the shared mailbox

  • Full Access
    The Full Access permission gives the total control to the user over the shared mailbox. The user can create and edit calendar events, email messages, and contacts.
  • Send As
    The Send As permission gives the ability to impersonate the shared mailbox to the user.
  • Send on Behalf
    The Send on Behalf permission allows the user to send the email on behalf of the shared mailbox. When anyone gets the reply from the shared mailbox, then it will look like ‘Adam on Behalf of Sales Department..’


Shared mailboxes will have some crucial data in them. When you take a backup of Office 365 mailboxes, then you should take caution that you back up the shared mailbox also. Kernel Office 365 Backup and Restore software is one such tool that mainly works for taking the backup of Office 365 mailboxes, including shared mailboxes.