How to validate email id before SmtpMail.Send(message) method in .net application

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I am working in a .net application where I am sending email through smtp if the email id is not valid then also SmtpMail.Send(message) is not throwing any error, and I am getting the information of unsuccessful mail through email in sender mail id Please refer the image

so is there any way to find the invalid email at the time of sending email so that I can warn the user about it. previous answer on the issue

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