What is the sender email address for TM30 registration confirmation in Thailand?

If you mean, it first time register,

My case : Fisrt time registered, they will automatic sent you message that they send you email to confirm email.

After few day, I got email and they want me to confirm my email from the email they sent to me. Then they said they will confirm me username password again via email, until now many days still, I am not get their second email.

Let's me know if you get any response from them😅