One thing that mailing lists (and newsgroups) have over platforms like Github is threaded discussions. It's similar to comparing reddit and HN to facebook and

One thing that mailing lists (and newsgroups) have over platforms like Github is threaded discussions. It's similar to comparing reddit and HN to facebook and github. But email lists (and newsgroups) have one thing that even HN and reddit do not. That is, the ability to quickly see new posts. In HN, I have to search through the entire thread to find new posts when I refresh the page. It's the same issue with reddit unless you're a subreddit moderator or have a reddit gold subscription.