'Blackmail' spam sent to email address registered here
This email address has only ever been used for this forum. My guess is that the forum email database was copied (happens a lot). The text was sent as an image.
Not sure what dodgy images they are referencing. Maybe an overly explicit closeup of aerodynamic components ...
The same email text has been reported as being associated with blackmail scams by other people:
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.