Email Migration

How to Move an Email Account to Microsoft 365 for Business

Maira Mehtab Sep 28, 2026 869 views

Question details

The user needs to migrate an existing email account from a third-party host to Microsoft 365 for Business.

Product: Microsoft 365
Device & OS: not provided
Scenario: Setting up new business mailboxes in Microsoft 365 and transferring existing email data and domains from a previous host.
Observed behavior: A comprehensive migration strategy requires mailbox setup, data migration, domain verification, and DNS configuration to minimize downtime.

Before you start

Before beginning the migration, ensure you have administrative access to your current email host and the DNS management portal for your custom domain.

Solution 1Recommended

Complete the Microsoft 365 Email Migration Process

Follow this standard migration process to safely move your email data, configure your custom domain, and route your incoming mail to Microsoft 365.

Migrating your email involves backing up your current data, provisioning your new Microsoft 365 environment, and updating the internet's routing (DNS) to point to your new mailboxes.

Export existing mail data

Access your current email server or client and export your existing mail data (often as a PST file or via a supported migration tool).

Purchase a Microsoft 365 plan

Go to the Microsoft 365 website and purchase a business plan that includes Exchange Online.

Create mailboxes and assign licenses

Log in to the Microsoft 365 Admin Center, create user mailboxes, and assign the appropriate business licenses to each user.

Migrate the mail data

Import your previously exported mail data into the newly created Microsoft 365 mailboxes.

Add and verify your custom domain

In the Microsoft 365 Admin Center, navigate to Settings > Domains. Add your custom domain and verify ownership by adding a TXT record to your DNS provider.

Update MX and other DNS records

Log in to your domain registrar's DNS panel. Update your MX (Mail Exchanger) records to route incoming mail to Microsoft 365, along with required CNAME and TXT (SPF) records.

Add custom aliases

Add your custom-domain address or alias to the newly established mailboxes to ensure users can send and receive from the correct addresses.

Migration Timing Considerations: Plan your DNS changes carefully, as MX record updates can take up to 48 hours to propagate across the internet. Keeping both old and new mailboxes active during this window minimizes the risk of lost emails.

Free Microsoft Office alternative

Looking for a Cost-Effective Productivity Suite?

While moving to Microsoft 365 handles your business email needs, investing in the full premium Office suite can be costly for some teams. WPS Office is a powerful, lightweight, and free alternative that seamlessly integrates with your workflow while maintaining strict compatibility with Microsoft file formats.

1. Download the software: Visit the official WPS Office website and download the installation package for your operating system.
2. Install the application: Run the installer and follow the on-screen prompts to set up WPS Office on your computer.
3. Open your business documents: Launch WPS Office and open your existing Word, Excel, and PowerPoint files instantly without formatting loss.

Fully compatible with Microsoft Office formats including .docx, .xlsx, and .pptx.Lightweight installation that runs fast and smoothly on Windows, Mac, and Linux.Familiar ribbon user interface ensures zero learning curve for seamless migration.Cost-effective solution with robust free tools for everyday business tasks.

microsoft office alternative - wps office

Frequently Asked Questions

How long does it take to migrate an email account to Microsoft 365?

The total duration depends on the amount of data being transferred and your current network complexity. While moving data can take hours to days depending on size, the final DNS (MX record) updates typically take between 1 to 48 hours to propagate.

Will I lose incoming emails during the migration process?

Not if planned correctly. By keeping your old mailboxes active while the MX records are updating, incoming emails will be successfully delivered to either your old or new inbox during the transition period.

Can I migrate personal email accounts to Microsoft 365 for Business?

Yes. Microsoft provides specific guidance and tools in the Exchange admin center to help switch from personal subscriptions or third-party IMAP email providers to a business Exchange Online environment.

Do I have to use a custom domain with Microsoft 365?

While it is highly recommended to use a custom domain for a professional business appearance, you are not strictly required to. You can initially use the default 'onmicrosoft.com' domain provided during setup and add a custom domain later.

Migration & Recovery