I'm looking to send an e-card to invite people to a rehearsal dinner. I would like a service that allows you to state who exactly you are inviting that is attached to that e-mail (for example, when you address an actual invitation, you can specify "and family" ect..). I also would like them to not only RSVP electronically, but also answer a question as to what entree option they would like. Any suggestions? Thanks in advance!