I just had a potnetial client on the phone and they are requiring a complete newsletter solution.
My first feeling was to have a script developed for them. The script would store sign ups in a db under different interests and then through an admin panel the client could send to each interest group as they liked.
The client has mentioned gammadyne http://gammadyne.com/mmail.htm
has anyone used this. Its seems to be able to do the job although it seems a bit of a pain. For example its an application and it checks your opo server for sign ups and dl's them to build the list. So you can have it search for the text file for interext x and it can send them to group x.
It just seems a little akward and also not a very user friendly interface.
Any experience with this?