Direct mail markerters and advertisers work hard to determine what type of content motivates buyers. Research consistently uncovers four characteristics of content that score highest in buyer interest. The best content is;
1. useful or entertaining.
2. relevant to the buyer's interests.
4. unique to the seller, either in content or presentation.
These four characteristics are particularly important for opt-in e-mail subscriptions. If a reader signs up for your e-newsletter, the motivation wasn't to do you a favor--it was because the content of the newsletter had perceived value.