You Can Use Multiple Gmail Accounts Simultaneously

You Can Use Multiple Gmail Accounts Simultaneously. If you are logged in to your Gmail account and want to check email of your another Gmail account,  you can check email from both without having to logout and login again. To enable this, on the top right menu, click ‘Add Account’ and you can add an account as a secondary account.

But when you logout and login to Gmail again, you will not again see previously linked accounts. Why? If your one of your accounts is hacked, you should not lose your all other accounts too! So for security reasons, accounts are not permanently linked. For more Gmail tips, please read the full article.