"Contact Us" forms are normally created from feedback type pages, which do not include distinct fields for email address or phone number. While control panel users can add this personal contact information in the content of these pages, many chose not to. It was suggested that this is because these fields are not built into the backend to encourage customers to provide this information.
Thanks! The feedback page does not include an option for the owner of the NationBuilder site to add their email and phone automatically - I believe this is by design as many site owners prefer to have a log in their nation via the feedback form. Additionally they are welcome to add any other contact information in the content of the page.
However, if this is something that a lot of people want then it's something that we will definitely consider!