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ListMessenger exceeds expectations as a well designed, easy to use, lightweight mailing list management solution for your website. ListMessenger is feature packed but because of its intuitive design remains simple to use and easy to maintain.
ListMessenger 2.2.1 Now Available Follow @ListMessenger on Twitter

Will I get the source code for ListMessenger if I download / purchase it?

Yes, the source code is included with both ListMessenger Light and ListMessenger Pro.

Why? Because we believe in Open Source and we believe that leaving the source open results in better code, better products and a better community of users who are all active in the development and implementation of the project.