[Plugin: Contact Form 7 Dynamic Text Extension]

I have succesfully set this up with the unsubscribe link in an email newsletter, such that when the reader clicks on the link in their email, they will be linked to an unsubscribe form with their address already filled in. I hope this will solve my problem of having people unsubscribe addresses that are not actually present in my list.

However, using the dynamic text does not allow for email validation. In my manual entry contact form, i create an email field that will fail if the syntax of the address entered is incorrect. Is there any way to accomplish the same syntax check in a dynamictext field?