In Gmail, click your profile picture at the top right of the page. In the dropdown box that opens, just click the “Sign Out” option. That’s it. You’re done. Note that if you use multiple accounts, that dropdown will show a list of your accounts. Click the one you want to sign out from, and then use the “Sign Out” option.

The only way to sign out of the Gmail app is to remove your entire account from your phone or tablet. However, you can do many of the same tasks through other actions. Sign out options

Gmail is available across all your devices Android, iOS, and desktop devices. Sort, collaborate or call a friend without leaving your inbox."

Sign in - Google Accounts

Sign in to your Google Account, and get the most out of all the Google services you use. Your account helps you do more by personalizing your Google experience and offering easy access to your ...

On your computer, go to gmail.com.; Enter your Google Account email or phone number and password. If information is already filled in and you need to sign in to a different account, click Use another account.; If you see a page describing Gmail instead of the sign-in page, click Sign in in the top right corner of the page.

On your computer, go to gmail.com. Enter your Google Account email address or phone number and password. If information is already filled in and you need to sign in to a different account, click Use another account.; If you see a page describing Gmail instead of the sign-in page, click Sign in in the top-right corner of the page.

Sign in - Google Accounts