How to Create a Shared Mailbox in Outlook? Easy Steps

A shared mailbox in Microsoft Outlook is designed for teams and organizations that need multiple users to access and manage the same email account. Instead of sharing passwords, a shared mailbox allows authorized users to read, send, and respond to emails from a common address such as support@company.com or info@business.com.

Shared mailboxes are commonly used by customer support teams, HR departments, finance teams, and administrative staff. They improve collaboration, maintain transparency, and ensure that no important email goes unanswered.

If you are using Outlook with Microsoft 365, you can create and manage a shared mailbox through the Microsoft 365 Admin Center. 

In this guide, you will learn the complete process of creating and adding a shared mailbox in Outlook, assigning members, configuring permissions, and accessing it properly.

So let’s start!

How to Create & Add a Shared Mailbox in Outlook? Complete Process 

To create a shared mailbox in Outlook, sign in to the Microsoft 365 Admin Center, go to Teams and groups, select Shared mailboxes, click Add a shared mailbox, enter the mailbox name and email address, assign members, and save changes. Once created, users with permission can access it directly in Outlook.

Now, let us go through the complete process.

Step 1: Sign in to Microsoft 365 Admin Center

The first step is to log in to the Microsoft 365 Admin Center using your administrator credentials. If you see the “You don’t have permission to access this page or perform this action” message, then you need to ask the admin, because you aren’t an admin.

Open your web browser and go to the official Microsoft 365 admin portal. Enter your admin email address and password. Once logged in, you will see the dashboard with various administrative options.

Make sure you are signed in with an account that has either Global Admin or Exchange Admin permissions. Without these permissions, you will not be able to create a shared mailbox.

After a successful login, you are ready to move to the next step.

Step 2: Navigate to the Shared Mailboxes Section

Inside the Admin Center dashboard, locate the navigation menu on the left side of the screen.

Click on Teams and groups. From the dropdown options, select Shared mailboxes. This section allows you to view existing shared mailboxes and create new ones.

If your interface looks slightly different, you can use the search bar at the top of the Admin Center and type Shared mailboxes to quickly find the correct section.

Once you are inside the Shared mailboxes panel, you will see a list of any existing shared mailboxes in your organization.

Now you are ready to create a new one.

Step 3: Add a New Shared Mailbox

Click on the Add a shared mailbox button at the top of the page.

A new window will appear asking for basic details. You will need to enter the following information:

Enter the Name of the shared mailbox. This is the display name that users will see. For example, Customer Support.

Enter the Email address you want to assign to the shared mailbox. For example, support@yourcompany.com.

The system will automatically generate the domain based on your organization’s Microsoft 365 subscription.

After entering the required details, click Save.

The system will now create the shared mailbox. This process usually takes a few seconds to complete.

Once the mailbox is successfully created, you will see a confirmation message on your screen.

Step 4: Assign Members to the Shared Mailbox

After creating the mailbox, the next important step is assigning members who can access it.

In the Shared mailboxes list, click on the newly created mailbox. A details panel will open on the right side.

Look for the Members section and click Edit.

Now, click Add members. A list of users in your organization will appear. Select the users who need access to the shared mailbox.

After selecting the users, click Save.

These users will now have permission to access and manage the shared mailbox. They can read incoming emails and send responses depending on the permission settings.

Step 5: Set Mailbox Permissions

By default, members added to a shared mailbox receive Full Access and Send As permissions. However, you can customize these permissions if required.

There are three main types of permissions:

Full Access allows users to open and view the mailbox contents.

Send As allows users to send emails as if they are the shared mailbox itself.

Send on Behalf allows users to send emails on behalf of the shared mailbox, and recipients will see both names.

To adjust permissions, go to the Exchange Admin Center from the Microsoft 365 Admin dashboard.

Navigate to Recipients, then Shared. Select your shared mailbox and modify the permissions as needed.

After configuring permissions, save your changes.

Step 6: Access the Shared Mailbox in Outlook

Once permissions are assigned, users can access the shared mailbox in Outlook.

If they are using the Outlook desktop app, the shared mailbox may automatically appear in the folder pane after some time. If it does not appear automatically, they can manually add it.

Open Outlook and click File. Select Account Settings and then Account Settings again.

Choose your email account and click Change. Click More Settings and go to the Advanced tab.

Under Mailboxes, click Add and type the shared mailbox name. Click OK and restart Outlook.

The shared mailbox should now appear in the folder panel, allowing users to open the Inbox, Sent Items, and other folders.

If using Outlook Web App, users can right-click on Folders, choose Add shared folder, and enter the shared mailbox email address.

Step 7: Test the Shared Mailbox

After setup, it is important to test whether everything is working correctly.

Send a test email to the shared mailbox address.

Ask one of the assigned members to open the mailbox and check if the email appears in the Inbox.

Then try replying to the email using Send As or Send on Behalf to confirm permissions are working properly.

Testing ensures there are no configuration errors and all members have correct access.

Step 8: Manage Storage and Settings

Even though shared mailboxes do not require a license in many cases, they still have storage limits.

Monitor mailbox size regularly through the Admin Center. If storage exceeds the limit, you may need to assign a license.

You can also configure additional settings, such as:

• Automatic replies
• Email forwarding
• Inbox rules
• Delegation settings

These options can be managed through the Exchange Admin Center.

Proper maintenance ensures smooth collaboration among team members.

Faqs

What is a shared mailbox in Outlook?

A shared mailbox is a mailbox that multiple users can access to read and send emails from a common address without sharing login credentials.

Do I need a license to create a shared mailbox?

In most cases, shared mailboxes under the storage limit do not require a separate license in Microsoft 365. However, if storage exceeds the limit or advanced features are required, a license may be needed.

Can I create a shared mailbox directly in Outlook?

No, you cannot create a shared mailbox directly from the Outlook desktop app. You must use the Microsoft 365 Admin Center.

How many users can access a shared mailbox?

There is no strict small limit, but Microsoft recommends keeping the number manageable to avoid performance issues.

What is the difference between Send As and Send on Behalf?

Send As makes the email appear as if it were sent directly from the shared mailbox.
Send on Behalf shows that a specific user sent the email on behalf of the shared mailbox.

Can shared mailbox members delete emails?

Yes, members with Full Access permission can delete emails unless restrictions are applied.