How to verify email is valid or not

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In my sign up form have email option how to put check on email that field the entered email is valid or not like if some one write abc@xyz.com, qwertyzxczx@gmail.com which is invalid will get error email is not valid if write valid email which is have available on server show valid email.

Posted 19-Oct-15 0:47am

jas80871

Updated 19-Oct-15 0:49am

Maciej Los

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Maciej Los 19-Oct-15 6:50am

Why do you state that abc@xyz.com, qwertyzxczx@gmail.com emails are invalid?

phil.o 19-Oct-15 8:32am

I think he is meaning that abc@xyz.com, qwertyzxczx@gmail.com is not valid as a single e-mail address. :)

Maciej Los 19-Oct-15 9:18am

It's quite possible...

Crushe 11-May-16 5:43am

This email library for C# can enable you to do this, see this sample (it demonstrates how to validate email address).

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F-ES Sitecore · Accepted Answer · 2015-10-19T00:53:00

Solution 1

You can't verify that an email is valid, the only way to verify the address is to send it an email with an activation code\link that the user clicks to verify their account.

Posted 19-Oct-15 0:53am

F-ES Sitecore

Comments

Maciej Los 19-Oct-15 9:19am

5ed!

Maciej Los · Accepted Answer · 2015-10-19T00:55:00

Solution 2

If by "validate" you mean you want to check if an email address exists, there's no chance to do it, unless... an email has been successfully send and email server does not return an information about errors.

Please, read past questions and answers[^].

Posted 19-Oct-15 0:55am

Maciej Los