Wow, that's a big surprise. Mailist was featured in great Newsletter, Recomendo - a weekly email that gives you 6 brief personal recommendations of cool stuff.
The author of that issue redefined what Mailist is. Here is a description they made:
"Rediscover things you saved
I uploaded a copy of my Chrome bookmarks to Mailist, and now once a week I get an email newsletter with 10 random links to pages and sites I have saved. It has reunited me with travel ideas, things I want to buy, and useful online tools like this fabric calculator chart. I also use it as a way to clean house and delete bookmarks I no longer have use for. — CD "