Is there an e-mail subscription option for this?

There hasn't been any discussion on the git mailing list about setting up email subscriptions, as far as I have followed the conversation. The idea was only really floated a week or two ago, so the publication is really in its infancy, though similar things have been done before to an extent.

I think it is a great idea, just needs someone to put it together probably! I'll raise an issue about it if one doesn't already exist.