The contact information is for the Standard Directories. The deep, robot-driven search engines don't need any of this info, since they get all the info they need by visiting your pages.

The email address is where the confirmation emails will be sent to. Normally these messages confirm the fact that your submission has been received but not neceessarily accepted. Note also that not all of the search engines send confirmations, only some of them. None of the major, robot-driven search engines send email confirmations.