What is an e-mail address worth? How about a tenfold increase in lifetime customer value!

David Cross, a top Internet marketing consultant to Agora Publishing, says that customers who give you their e-mail address will spend up to ten times more money with you than customers for whom you do not have an e-mail address.

David should know: Agora Publishing has 500,000 subscribers to their free e-zine, the Daily Reckoning – and 150,000 of these subscribers are buyers spending approximately $97 million in 2005 alone.

Source: NEPA Conference, 12/8/05. From Bob Bly’s Direct Response Letter