Mojo Mail for Mac

From Shazat:

Mojo Mail is a light weight, feature rich mailing list manager. Its main advantage to systems like Majordomo and Mail Man is in its web-based control panel. Anything that has to be done with a mailing list can be handled from your browser. No weird commands to remember, no typing into a terminal shell. This makes Mojo Mail extremely friendly and intuitive. Mojo Mail is being used by many people to replace Majordomo. More control can be given to individual list owners and less work has to be done by the system administrator. Mojo Mail works great for individual sites and as a ASP (Application Service Provider)

Mojo Mail has all of the standard things you would expect (or should expect) from a mailing list manager; opt in subscribing, opt out unsubscribing, message archiving and message sending. Since Mojo Mail is a web-based application, you can also customize the look and feel of the pages that your visitors will interact with. Mojo Mail also has light group discussion support.