Migrate shared mailbox to office 365

Migrating a shared mailbox to Office 365 involves several steps, including setting up the mailbox, migrating the data, and configuring permissions. Here's a step-by-step guide to help you migrate a shared mailbox to Office 365:

Prerequisites:

1. You have an Office 365 subscription with a mailbox plan that supports shared mailboxes.
2. You have the necessary permissions to manage mailboxes in your Office 365 tenant.
3. You have a backup of the shared mailbox data, if possible.

Step 1: Set up the shared mailbox in Office 365

1. Log in to the Office 365 admin center (https://admin.microsoft.com).
2. Go to the "Users" section and click on "Add a user" or "Edit" if the mailbox already exists.
3. Select "Shared mailbox" as the user type.
4. Enter the mailbox name, display name, and email address.
5. Choose the mailbox plan that supports shared mailboxes (e.g., Exchange Online Plan 2 or higher).
6. Set up the mailbox administrator (the person responsible for managing the shared mailbox).

Step 2: Migrate the shared mailbox data

You can use one of the following methods to migrate the shared mailbox data:

Method 1: Use the Office 365 Migration Tool

1. Download and install the Office 365 Migration Tool (https://www.microsoft.com/en-us/download/details.aspx?id=42038).
2. Run the tool and select "Shared Mailbox" as the migration type.
3. Enter the source mailbox details (e.g., the current mailbox server or Exchange Online).
4. Enter the target mailbox details (e.g., the new Office 365 shared mailbox).
5. Follow the tool's instructions to complete the migration.

Method 2: Use PowerShell

1. Connect to your Office 365 tenant using PowerShell (https://docs.microsoft.com/en-us/powershell/exchange/exchange-powershell?view=exchange-ps).
2. Use the New-Mailbox cmdlet to create the new shared mailbox in Office 365.
3. Use the Get-Mailbox cmdlet to retrieve the source mailbox's mailbox ID.
4. Use the New-MailboxExportRequest cmdlet to export the source mailbox data to a PST file.
5. Use the New-MailboxImportRequest cmdlet to import the PST file into the new shared mailbox.

Step 3: Configure permissions

1. Log in to the Office 365 admin center.
2. Go to the "Mailboxes" section and select the shared mailbox.
3. Click on "Permissions" and add the necessary users or groups with the required permissions (e.g., "Editor" or "Contributor").
4. Set up the mailbox administrator as the primary owner of the shared mailbox.

Additional Tips:

• Make sure to test the shared mailbox after migration to ensure that it's working as expected.
• Consider setting up a mailbox backup schedule to ensure that the shared mailbox data is regularly backed up.
• If you're migrating a large amount of data, consider using a third-party migration tool or consulting with a Microsoft partner for assistance.

By following these steps, you should be able to successfully migrate a shared mailbox to Office 365.