It is odd, and it has happened before so it seems to be a persistent bug. The articles in question are these:-Joomla Community Magazine email
If you arrived on this page, by clicking on a link in the Joomla Community Magazine (JCM) email,
please note the following:
The email was sent out in error, and the articles in that email are still being finalized.
The January edition of the JCM will launch on the 5th of January 2018.
You do not have to log in to read any of the published articles of the JCM.
You will be able to access the new articles on Monday.
GET a Higher Google Ranking With PixTitle http://feedproxy.google.com/~r/JoomlaMa ... dium=email
Hello, I am JoRobo http://feedproxy.google.com/~r/JoomlaMa ... dium=email
CSS ile Arka Plan Resmi Kullanım http://feedproxy.google.com/~r/JoomlaMa ... dium=email
Also they do seem a bit spammy to me.