How to check if the mail has been sent successfully

Question

I am developing an Asp.Net application, where I am sending a mail to the user\'s email address, if he forgets the password.

I want to check if the mail has been sent

Answer 1

if your SmtpMail.Send(message) method returns no error, it means the email was sent to the SMTP server, then you are out of your jurisdiction, that is how far you can know.