Warning: This message may not be from whom it claims to be. Beware of following any links in it or of providing the sender with any personal information.The only link in the email was to the Google Books Partner program.
I have also gotten email from the Google Blogger team, and had it marked as spam.
Currently Google has lawsuits about whether it should be allowed to represent the interests of authors of orphan works. However it is very difficult to get the company to do what I want with my books even when I am filling out their own web forms and explicitly granting permission, and communicating with their own email service. There should be a way to copy orphan works, but Google control is not the answer.