Ask HN: What newsletters do you read every day or week?

It seems like there's been a massive resurgence in email newsletters recently. Maybe it's because slack has helped clear our inbox of tasks freeing up our inboxes for the kind of emails we love to read again.

Whatever it is, there's not much curation around email newsletters and there are just too many publishers to dig through (Mailchimp alone has 7m+ customers).

So I thought we could all share the best newsletters we're reading here.