Can anyone recommend how I can set up an opt-in mailing list for a local sports club website that I am considering hosting on PlusNet. I would like users to be able to subscribe/unsubscribe from the mailing list via the website. I would also like users to be able to select various options which would be used to customize the content and type of information they will receive from the mailing list. I have looked at PlusNet's MyCircular but I don't think it's up to the job. I don't mind doing some programming to achieve what I need.