Majordomo works well, for small and medium sized lists.

Unfortunately, it uses a linear search through unsorted list to handle unsubscribe requests, which stops working somewhere before 40,000 subscribers. My solution was to keep the subscriber list sorted, and maintain a list of people requesting to unsubscribe. Once a day, I updated the subscriber list using comm. Since the newsletter only went out once a day, this worked well, and scaled to support 3,000,000 subscribers.

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In reply to Re: Need mailing list code by TomDLux
in thread Need mailing list code by lizziet

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