To open Gmail, you can sign in from a computer or add your account to the Gmail app on your phone or tablet. Once you're signed in, open your inbox to check your mail. To open Gmail, you can log in from a computer, or add your account to the Gmail app on your phone or tablet. Once you've signed in, check your email by opening your inbox. Enter your password. Add Gmail to an existing Google Account If you add Gmail to your Google Account, your account's primary username permanently changes to yourusername … Tip: To use Gmail for your business, a Google Workspace account might be better for you than a personal Google Account. With Google Workspace, you get increased storage, professional … Someone else is using your account If you think someone is using your Google Account without your permission, follow the steps to recover a hacked or hijacked Google Account or Gmail.