How to Migrate IMAP Email Accounts and Aliases to Microsoft 365
Question details
An organization needs to migrate personal, alias, and customer-facing IMAP emails to Microsoft 365 without buying a separate license for every single address.
- Product
- Microsoft 365
- Device & OS
- not provided
- Scenario
- Moving multiple IMAP email addresses, including aliases and customer-facing accounts, to Microsoft 365 mailboxes efficiently.
- Observed behavior
- The user wants to ensure all messages are migrated while minimizing licensing costs by utilizing aliases properly.
Ensure you have admin access to your Microsoft 365 admin center and have prepared a spreadsheet mapping your existing IMAP email addresses to their new primary mailboxes or aliases.
Migrate Primary Mailboxes and Add Aliases in Microsoft 365
Migrate the primary user mailbox first, then add aliases to that account to avoid purchasing unnecessary licenses.
Microsoft 365 allows you to associate multiple email addresses (aliases) with a single licensed mailbox. Messages sent to an alias are automatically delivered to the primary mailbox's inbox.
Use the Exchange admin center to migrate the primary IMAP mailbox data to a licensed Microsoft 365 user account.
Log in to the Microsoft 365 admin center, navigate to 'Users' in the left menu, and click on 'Active users'.
Click on the user account that will receive the aliases to open their properties panel.
In the 'Account' tab, select 'Manage username and email'. Type the former IMAP alias address, select the correct domain, and click 'Add'.
For standalone customer-facing addresses that require sending and receiving independently, assign a dedicated Exchange Online license or create a free Shared Mailbox.
Boost Productivity with WPS Office After Your Microsoft 365 Migration
While upgrading your organization's email infrastructure, consider deploying WPS Office as a free, lightweight, and fully compatible suite for your document creation needs. It offers exceptional performance without the recurring subscription fees.
Frequently Asked Questions
Do I need to pay for a license for an email alias in Microsoft 365?
No, email aliases do not require an additional license. You can add up to 400 aliases to a single licensed user account at no extra cost.
Can I migrate emails directly into an alias address?
No, you cannot migrate IMAP folders directly into an alias. You must migrate the emails into the primary licensed Microsoft 365 mailbox, and then attach the alias to that primary account.
How do I handle customer-facing emails like 'support@company.com'?
If the account needs to send and receive independently, you must either purchase a standalone licensed mailbox or set it up as a Shared Mailbox. A Shared Mailbox does not require a license, but it does require at least one licensed user to access it.
