I mentioned in my previous post that I could not send our regular weekly newsletter due to a formatting issue in Buttondown. Fortunately, my support request was answered quickly. It turned out that I had an extraneous tag in the header (it had not caused any issues before this week). I sent the email. In so doing, I learned something interesting about Buttondown. Two reasons I like Buttondown is because it has a full searchable archive and an RSS feed. That is, it functions like a blog which supports my making Newsletter Leaf Journal its own publication. For today’s email, I set NLJ copy as the canonical URL since I published that before sending the email. To my surprise, I learned that when you set an external link as the canonical, the archive link for the newsletter takes you to the original instead of the Buttondown version (I assumed that the Buttondown archive version would be accessable but with the canonical tag pointing search engines to the original).