Tips to Building Successful E-Mail Lists, Part 1 of 2

* To determine the value of an e-mail subscriber name, set up a chart.
Take a segment of your subscribers and follow their lifetime cycle over a three-year period. Account for the following factors: unsubscribe rate, undelivered rate, average substitutions in a year, promotional e-mails delivered, open rate, clickthrough rate, conversion rate, online orders, offline orders, total orders and total revenue.