Paste a Google URL that uses an account number (like https://mail.google.com/mail/u/0/#inbox/…) to get one tied to the account's email address, so it opens in the right account no matter the sign-in order.

Your accounts

Enter the email for each account number, in the order shown in Gmail's account switcher (u/0 is the account you signed into first). These are saved only in this browser, not on the website.

    Bookmarklet

    Drag this to your bookmarks bar. Clicking it on any Gmail page sends that page's URL here and converts it.

    Gmail → email link