Some people are reluctant to give that information, however, or they are simply too lazy to type it, and if you do not require the name for successful subscription you end up with an anonymous user who you can only greet with "Dear Subscriber."
There is a surprisingly simple, but effective way to turn these anonymous subscribers into people you know by name:
- Ask them.
Send a letter to those who have signed up for your newsletter, but haven't submitted their name periodically and tell them you'd love to greet them with their name instead of the sterile "Dear Subscriber." Chances are lots of them will be more than willing to reveal their name.
One note, though: make sure you don't mail the same person more than once with your request for personal information.

