To clone a Gmail account, you can utilize the 4n6 Email Backup App. This app allows you to create a complete copy of your Gmail account, including all emails, labels, and folders. Simply connect your Gmail account to the 4n6 Email Backup App, select the clone option, and the app will create an exact replica of your account. This cloned account can be used for backup, archiving, or migration purposes, ensuring that your email data is safe and easily accessible.