What is this spam I just got sent with a non-working unsubscribe link?

[nelson]

Subject line: "Last Week's Most Popular Topics (from 2015+ S550 Mustang Forum (GT, EcoBoost, GT350, GT500, Bullitt) - Mustang6G.com)"

Unsubscribe link leads to here: https://beta.mustang6g.com/forums/weeklydigest/manage/

Which requires a log that isn't my forum login.

Sponsored

 

[Nagare]

Seems like the new forum update/migration has been completed and that could be a feature of Xenforo, I got it too. You can read more about it in the official thread here.