Similar to having a strong password, two factor authentication can add another layer of security to your email. This can help to further prevent hacking attempts and leaks of any private information you may have in your email.
Included here are step by step guides on how to enable two-factor authentication for several popular email providers:
If you don’t see your email provider listed, you can always try a quick Google search “How to enable two factor authentication for [name of email provider]".