Maybe the user wants to unsubscribe temporarily while working under a heavy deadline or other pressure. Maybe the user will regret not getting your valuable information and will decide to resume the subscription at some later time. Each message footer should contain instructions on how to subscribe. If your newsletter is good, recipients will often forward it to other users, and they need to know how to get their own subscription. The Alertbox has about 200,000 readers , of which only 28,000 subscribe to the notification mailing list .
Most people get so much email that they are very protective of their inboxes.
It used the old-time batch processing command model where users had to type exact commands in the body of the email messages. Even worse, the confirmation messages for successful subscriptions were sent from the address alertbox-errors . And to activate their subscription, users had to reply to this message and edit the subject line to indicate their approval. Many failed to do so. The Alertbox announcement list is now hosted at SparkLIST , an ASP that specializes in high-end mailing lists.