If you want to stop using Outlook and start using Gmail exclusively, you can perform a one-time import of all your Outlook emails. This will migrate over all your existing Outlook contacts and messages, and will also keep an eye on your Outlook account for the next 30 days in case any late messages come in.
1. Go to the Microsoft Outlook. Sign into the Outlook that you want to migrate emails from.
2. Open Gmail. Sign in if you are not already signed in. Click the gear icon in the top-right corner, then select See all settings.
3. In the menu that appears, click the Accounts and Import tab.
4. Next, click Import mail and contacts.
5. Type in the Outlook address that you want to migrate your mail from, then click Continue.
6. On the next page, click Continue again. Give Gmail permission to access your Outlook account. If you have a pop-up blocker enabled, you might need to disable it and then start the process over.
7. Once they are linked, select what you want to migrate over from Outlook: Contacts, mail, and/or new mail for the next 30 days. We recommend selecting all three.
Depending on how much mail you had in the Outlook account, this could take a while. Once it's done, a message will appear at the top of Gmail telling you that the import is complete.
All your Outlook mail will be kept in a separate folder, but you can freely move those messages however you want.
This is a one-time migration, so once it's complete — or if you picked the new mail option, once the 30 days have passed — Gmail disconnects from Outlook. If you missed anything, you'll need to run the import again.