No promise of not selling your basic info.
http://hillaryclinton.com/help/privacy/in part
"How do we use the information you provide?
On registration, sign-up and contribution forms on HillaryClinton.com, we may ask for your name, address, telephone number, and e-mail address. We may also ask who, if anyone, referred you to the site so that we can credit those who are organizing volunteer support or fundraising for Hillary Clinton for President.
We will use your e-mail address to provide you news and information about Hillary Clinton for President. We may also use your zip code and state to send you e-mail messages about upcoming campaign events or activities in your area.
On occasion, we may also use the information that you provide online to contact you for other purposes or to solicit you for contributions. When you register or sign-up online, we may share your contact information with successor organizations and other like-minded Democratic candidates and organizations, and they may contact you. When you make a contribution to us, we may also exchange your contributor information with successor organizations and other like-minded Democratic candidates and organizations, and they may solicit you (see below for additional information regarding your contributor information). However, we will not sell or exchange your credit card information to any other third party under any circumstances."