A lot of people like to run email submit offers, but I bet you didn’t know many of them are already setup to be pre-poppable, did you? Even if nothing is mentioned in the description at the CPA network, simply try appending
&email@example.com to your affiliate link and see if it works.
&email= doesn’t work, also try
&firstname.lastname@example.org and see if that does it. If that doesn’t work either, then chances are that email submit is not pre-poppable – but try asking your AM to be sure.