FacundoVarela99_
All I’m saying is if you wanted to use your personal email for testing but also wanted it as your Agent email later on after testing you would need to change your Agent email to something else temporarily, add your personal as a system email, configure it, run tests, then once done delete the system email, and change your agent email back to your personal. At that point you would configure your real production email as a system email.
If you simply wanted to use your personal email for testing and you do not want it as your agent email at any point then all you need to do is add the personal email as a system email, configure it, run tests, delete it or disable it, and setup your production email.
Cheers.