emai validation

I am not sure if I have understood your question correctly. We have received an empty question from you with just the title as "emai validation". Do you mean to say that you want to validate the email address which user input in form?

I would suggest you to please take a look at our "E-mail Validator" widget and see if that fits into your requirement. 

Widget will sends a pass-code to the email address entered by user in form. User needs to copy the received pass-code and paste it in the verification code input box to validate the email. If the pass-code is not valid, form will not be allowed to be submitted.

Hope this helps.

Do get back to us if you have any questions.