I will soon be discontinuing the email subscription option for this blog. I recommend that email subscribers switch over to subscribing to the RSS feed for the blog. If you’re unfamiliar with RSS, here is an article on how to get started.
(I recommend RSS in general, and not just for subscribing to this blog. RSS lets you decide what sources you want to receive rather than leave the choice up to someone else’s algorithm.)
Update: I have replaced my email subscription service with a Substack account.
You can also find me on Twitter and on Mastodon at johndcook@mathstodon.xyz.