how to validate Email id exist or not

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I'm Dnyaneshwar Gangurde Developer of Asp.net C#....I have done Email validation but i want to check this perticuler Email id Exist or Not..
E.g. dggangurde99@gmail.com... This Email id is registered on email but how to i check in ASP.NET C# WEB APPLICATION???

Posted 16-Mar-14 22:39pm

DNYANESHWAR1

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[no name] 17-Mar-14 5:24am

this is really a simple thing no need to ask. If you are facing problem with your code just show here and where did you face problem then anybody can help you

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Bernhard Hiller · Answer 1 · 2014-03-16T22:48:00

The simplest way is: send an email to that address, and ask for a reply. If you receive it - no, not an automated error reply from the server! - , it exists.
Well, of course, you can check before that the domain exists, e.g. by a whois query. But no serious email provider will give you a list of registered accounts, so you'll have to send the email anyway.