InfoPath Dev

How can retrieve email address from the Infopath people/Group picker?When I add the people/Group picker into the infopath form, I only get 3 fields DisplayName,AccountId,AccountType.Can anyone show me how can I get the email either by configurations or by code.

I am using the feature receiver(Microsoft.Office.InfoPath.Server.Administration.XsnFeatureReceiver ) to deploy InfoPath form. It will show as a content Type in the Site collection. I promoted a few fields in the InfoPath form ,I am using these fields in my workflow.However , when starting the workflow ,the value is not retrieved from the ...