Move from Gmail to business email without losing your old mail

1. Decide what needs to come with you

Start with a short inventory: the Gmail account, its approximate mail size, the new address you want, and the phones or computers you use. Note shared addresses, website notifications and services that use the old address to sign in or recover an account.

List contacts, calendars, labels, filters and files separately. A mail migration does not mean every part of a Google account will move. Keep a recoverable copy of important data and confirm how you would open it before changing the working setup.

2. Set up the business mailbox first

Choose the mail service and create the licensed destination mailbox at a domain you control. Microsoft 365 and Google Workspace are common options; choose around the apps and working habits you need.

Keep ownership, billing and recovery access with your business. Follow the provider’s domain-verification and email setup instructions. Your website and email can use different providers, so identify the existing website records before making domain changes.

This creates a separate business address. It does not turn a personal Gmail account into the same account under a different domain.

3. Choose a supported way to copy old mail

For Google Workspace, Google’s data import tool can copy mail from a personal Gmail account into an existing Workspace user. The Gmail owner must authorize the connection. Check the date range, excluded labels and import report rather than assuming that everything was included.

For Microsoft 365, the right method depends on your source account and destination. Microsoft’s IMAP migration copies email folders, but not contacts, calendar items or tasks, and it does not create the destination mailbox. Plan those items separately.

Use a method supported by both providers and review the access it requests. Agree to a small pilot and a recovery plan before moving a large or important archive.

Provider guidance: Google: import email from a Gmail account.

4. Make a plan for messages sent to the old address

Keep the old Gmail account accessible while people learn the new address. If you want new messages forwarded, Gmail requires verification of the destination. Its automatic forwarding covers new messages except spam; it does not copy the historical mailbox.

Choose what happens to Gmail’s copy, then test the forwarding with a fresh message. Check the old account during the transition as well. Update your signature, website, invoices and important contacts to use the new address.

Review account sign-ins and recovery details individually. Do not delete the old Google account simply because the mail copy has finished.

Provider guidance: Google: how automatic forwarding works.

5. Check the result before relying on it

Save the migration report and investigate skipped or failed items. Open representative messages in the new mailbox, including older mail, recent mail, sent messages and attachments. Check how the labels or folders you actually use are represented.

Then test the day-to-day work. Send and receive at the new address, reply to an outside account, and confirm that replies use the intended business address. Test mail sent to the old address and any website or application that needs to reach you.

• Important old mail and attachments open in the destination.
• Contacts and calendars have their own checked transfer or retention plan.
• New mail reaches the business inbox and the old-address plan works.
• Phones, computers, signatures and recovery access are checked.

Provider guidance: Microsoft: migration methods and IMAP limits.

6. Keep a clear handoff

Record where the mail is hosted, who owns the accounts, what was copied, what remains in Gmail, and what still needs attention. Keep the old setup until the agreed checks pass and you are comfortable with the retention plan.

For help planning the move, bring the source and destination providers, approximate mailbox size, number of people and the data you need to keep. An address and a description are enough to start; do not send passwords or private message contents in an enquiry.