That’s a neat script and one of the simplest setups I’ve seen for running a mailing list (even though I don’t understand everything the Lisp is doing).

I’m a massive fan of mailing lists and despite all the other alternatives I think for the right group of people they’re the perfect solution.

* Here comes the shameless plug *

I’m the founder of Gaggle Mail (https://gaggle.email/) which provides dead simple group email. Our customers are as far from the HN crowd as you can get; non-technical, generally elderly but they’re desperate for something simple, with few features that does just what they need - and they’re willing to pay!

There’s a real market for taking what appears as a simple technology to most techies and dumbing it down to make it accessible to a wide and willing market.