Hey Bruno - We have a ‘Email’ ready form field that provides email validation. See this video on how to add this field and enable the validation:

http://support.unbounce.com/entries/3…

This will prevent users form submitting a value that doesn’t follow the conventional email format. However, it’s no guarantee it will stop robots from submitting your form. Some robots use workarounds to override/bypass the form validation and still submit invalid information.

Hi Johnny

I just read your comment for email validation…But I have more question for it.

I built the landing page on unbounce.But I can’t use default email validation on it.

My goal is to validate email from database…For instance when anyone signs up on landing page, it is important to know if it exists in database…so if it already exists i n database,we have to process this email as invalid one.In order to do it, I am about to use ajax call for validation.But I am not sure how to use ajax url for posting email to another url.

I am very kind of you to help me about this issue.Please let me know if you have any question.

Regards,

David 

Hi David! 

I would probably advise getting in touch with our support team for further clarification on this. You can chat with us via email (support@unbounce.com) or phone (1.888.515.9161). 

Hi Justin Veenema, Thanks for your reply for my question.

Here are the link of my landing page built in unbounce.

http://www3.biznessapps.com/dev-2/

But I can’t use default email validation on it.

My goal is to validate email from database…For instance when anyone signs up on landing page, it is important to know if it exists in database…so if it already exists in database,we have to process this email as invalid one.In order to do it, I am about to use ajax call for validation.But I am not sure how to use ajax url for posting email to another url.

In details,I followed the following steps for ajax call.

http://screencast.com/t/LxCrLBYE

You see this url http://www.biznessapps.com/api_outbounce_pardot.php above code.

This is one to call ajax for email validation…but it doesn’t work.

In a word…I just want to know how I have to use custom ajax url on landing page.

Thanks for your kindness.

David