Every step below is from an official source
Switch from Yahoo Mail to Gmail
What to do at Yahoo Mail before you leave, what Gmail needs when you join, and everything else the switch touches. Your full plan is built in your browser and stays there.
Official sources reviewed . How we review sources
At Yahoo Mail, before you leave
Download your Yahoo mail with an IMAP appBefore
Use Yahoo's IMAP settings to download your mail into an app like Thunderbird, Outlook or Mac Mail. Large accounts can take several days or longer.
Download your email from Yahoo Mail with IMAPYahoo. ReviewedChoose to keep mail on the serverDuring
If your email app asks whether to keep mail on the server, select yes. Otherwise your email is deleted from your Yahoo account as it downloads.
Download your email from Yahoo Mail with IMAPYahoo. ReviewedDownload what you need before closingAfter
Closing your Yahoo account removes access to your Yahoo Mail messages and folders, so download anything you want first. In most countries you can reactivate by signing in within 30 days.
Close or reactivate your Yahoo accountYahoo. Reviewed
At Gmail, when you join
Import mail and contacts in Gmail settingsDuring
On a computer, open Gmail settings, go to the Accounts and import tab and click Import mail and contacts. Follow the steps on screen, then start the import.
Add another email account on your computer - Gmail HelpGoogle. ReviewedCheck what the import brings overBefore
Gmail imports messages but not folders or labels. Your other email account needs POP access.
Add another email account on your computer - Gmail HelpGoogle. ReviewedExpect 30 days of forwarding after importAfter
After you import, Gmail forwards messages sent to your other account for 30 days.
Add another email account on your computer - Gmail HelpGoogle. ReviewedPlan for the end of POP mail fetchingBefore
Gmail is ending POP fetching from other accounts. Existing users can use it until January 2027. Importing mail and contacts on the web still works, but it is a one-time import that does not keep syncing.
Then: everything else the switch affects
The steps above are what Yahoo Mail and Gmail say. Your full checklist adds the accounts, codes, payments and devices that depend on your email provider, in a safe order. It's built from your answers, in your browser.