Multi services response serialization in embedded forms

I have implemented one remote service response data into my embeded form , than i have added java delegate class as listener to this form process in modeler, how should i get all this data inside html from, is there any way i can got it by javascript or angular?
here are some more questions i am interested in:
1.How should i invoke 2 service at a time and get response data into form,is it possible to use some logic which should act like camForm(load and fetchVaraible) ? should i add popup?(traditional ways by jquery or bootstrap isn’t helpful)
3.Is there any simple logictaht will help me send email form camunda?( i have used this logic but mail isn’t send and errors aren’t thrown too)
here is mail question link: