What input fields are required for each service?

Each service requires you provide different data fields. The following fields are required for each service:

SafeToSend Email Validation: Email address is the only field required.
Demographic & Behavioral Data: Either an email address or a first name, last name and postal address is required. Provide both to obtain the best quality match, and please ensure all columns headers are accurate.
Email Append: First name, last name, address and either city and state or zip are required.
Postal Append (Reverse Email Append): Email address is required.