This clarifies the program of collecting names and addresses for a mailing list. You may want to make sure you print a copy of this article NOW, so you can get the information off of it, as you need it. You will now become part of the Mail Order business. In this business your product is not solid and tangible, it's a service. You are in the business of developing Mailing Lists.
Many large corporations are happy to pay big bucks for quality lists.
However, the CASH made from the mailing lists is secondary to the income, which is made from people like you and me asking to be included in that list. What you are doing is creating a service. You may want to retain every name and address sent to you, either on a computer or hard copy and keeps the notes people send you. Please remember to declare your extra income on your income tax forms. Build your mailing list, keep good accounts, declare the income and pay your taxes.