Even if you’ve already got a long list of emails for clients and prospects, you should never stop adding to it. Especially since it’s not nearly as hard as it sounds. For example, make sure your list is always growing passively with a signup feature on your website. Subscription forms should be on your home page, blog page and everywhere else you can fit it without taking away from more important content.
: a function of e-mail software that automatically sends a response to incoming messages Unanswered e-mail is as big a turnoff as unanswered calls. Consider using your ISP's autoresponder to acknowledge received e-mail. It lets the visitors know their message arrived and gives you an opportunity to thank them for visiting the site.— Victoria Hall Smith, PC World, January 1999
Online surveys: Consumers are asked to complete a survey, including their demographic information and product and lifestyle interests. This information is used as a sales lead for advertisers, who purchase the consumer's information if provided. The consumer may 'opt-in' to receive correspondence from the advertiser and is therefore considered a qualified lead.