List building is all about connecting with your target audience by
offering them high quality information in exchange for their
subscription and in affiliate marketing, a laser targeted, responsive
email list will be the key element to your success.
Once a subscriber is a confirmed member of your list, you can begin
sending promotional based follow up emails in balance with relevant
and useful content based on your overall market.
Email marketers collect leads using a combination of squeeze pages
and opt-in forms. These forms are generated by your autoresponder
provider and are embedded into the HTML code of your squeeze page
template.
Each time a visitor to your squeeze page enters in their name and
email address, they are added to your mailing list database, and
become an active subscriber of your newsletter.
List building helps faciliate the process of converting subscribers into
active customers, since once your prospect has been added to our
mailing list, you are able to develop a relationship with them, that will
encourage sales as well as repeat sales (which will make up the larger
majority of your email marketing income).

To build Your Lists, You could offer:
Free Reports
Free Ebooks (full length of leaked chapters)
Free Tutorial Guides
Video Tutorials
Free or Trial Access To a Membership Program
Free Booklet with “Top Tips”
Free Weekly Newsletter Subscription
Free templates or graphics
Free Audio Interviews, Lessons, Tutorials