ChangeChecklist

Every step below is from an official source

Switch from Gmail to Proton Mail

What to do at Gmail before you leave, what Proton Mail needs when you join, and everything else the switch touches. Your full plan is built in your browser and stays there.

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Read the email address guide

At Gmail, before you leave

  1. Forward new Gmail messages to your new addressBefore

    In Gmail settings, open the Forwarding and POP/IMAP tab and click Add a forwarding address. Click the verification link sent to the new address, then select Forward a copy of incoming mail to and save.

    Automatically forward Gmail messages to another account - Gmail HelpGoogle. Reviewed
  2. Expect only new mail to be forwardedDuring

    Gmail forwards all new messages to the other account, except spam.

    Automatically forward Gmail messages to another account - Gmail HelpGoogle. Reviewed
  3. Download your mail and contacts with Google TakeoutBefore

    Go to the Google Takeout page, choose which products to include, then select Create export. Contacts are exported as vCard.

    How to download your Google data - Google Account HelpGoogle. Reviewed
  4. Know that a removed Gmail address is retiredAfter

    Download your data before removing Gmail. Gmail deletes your emails and settings after 30 days, and no one can use your Gmail address in the future.

    Remove Gmail from your Google Account - Computer - Gmail HelpGoogle. Reviewed

At Proton Mail, when you join

  1. Start Easy Switch in Proton Mail settingsDuring

    Sign in at mail.proton.me and go to Settings, All settings, Import via Easy Switch. It imports email from Gmail, Yahoo Mail, Outlook or any IMAP provider. Some providers also allow calendars and contacts.

    How to migrate to Proton using Easy SwitchProton. Reviewed
  2. Create a Yahoo app password firstBefore

    To import from Yahoo Mail, first generate a Yahoo app password for Easy Switch to use.

    How to migrate to Proton using Easy SwitchProton. Reviewed
  3. Choose how far back to importDuring

    You can import all messages or only the last 12 months, 3 months or month. Imports start with the newest messages, and you can run one transfer at a time from the same account.

    How to migrate to Proton using Easy SwitchProton. Reviewed

Then: everything else the switch affects

The steps above are what Gmail and Proton Mail 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.