So choose one of the above techniques to log out from the mails easily. These methods will give you the same result. If you want to reactivate your emails, you have to check on the enable this account option from the first and third methods or check the mail option from the second method. You may need to re-enter your account password to complete this step. You need to click on the top left corner’s messages icon, select ‘preferences,’ and uncheck ‘Enable this account’ option similar to the first method. Now select the application and double click on the messages icon to open it. Follow the two easy steps to sign out from mail accounts on Mac Step 1: Launch the Messages Appįirst, you have to click on the Go menu from the top of your screen.