How to check if email address exists in real world or not in C#

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I want to check the real availability of email by checking its records on server

What I have tried:

i have tried to connect to smtp server of domain but it can't handle bulk mails

Posted 14-Feb-18 0:55am

Member 13110646

Updated 14-Feb-18 1:25am

CHill60

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CHill60 14-Feb-18 7:10am

What has trying to connect to smtp server got to do with bulk mails? That section is for the code you have tried.
Not enough information for us to assist. Use the "Improve question" link to add more, including the code you have tried.

#realJSOP 14-Feb-18 8:21am

Why was this question voted down?

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phil.o · Answer 1 · 2018-02-14T01:22:00

Usually, you cannot, at least not in a reliable way.
SMTP servers tend to prohibit real-address checking, and it is a good thing as it makes spammers' life much more difficult.
You can only validate that an email address is well-formed.
There are already numerous questions here about that, you could have a quick search on CP for that subject.

OriginalGriff · Answer 2 · 2018-02-14T01:25:00

You can't check it: mostly because it prevents spammers from finding live email addresses and carpet bombing them with rubbish.

You can check if it's a valid email address: Google[^] but the opnly way to know if an address is "real" is to send it an email that the user must respond to - that is why many registration systems require an "email confirmation".

How to check if email address exists in real world or not in C#

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