Did you ever want to offer a real Newsletter-Service on your Website but didn't know how to realize this easily?
NewsletterManager is your solution.
It allows you to manage an (almost) unlimited number of
email addresses and send as many Newsletters as you want.
The most interesting feature of NewsletterManager is,
that other users can simply subscribe to your mailing list
by sending you a message with the subject SUBSCRIBE or
UNSUBSCRIBE (or any other subject you can specify by yourself
in the "Profiles"-dialog). You will then just have to click
"Check for subscriptions" so that NewsletterManager can
analyze your emails and add/remove users automatically.
Unrecognized emails are left untouched on your server!
Find it at : http://michel.weimerskirch.net/software.php