I am receiving email from GoDaddy... specifically the "GoDaddy Blog Newsletter." At the bottom of these emails you can select "unsubscribe" but this simply leads you to an email preferences page where you can select from only two categories: (1) a monthly summary of your account, and (2) non-promotional notices that deal with changes to your account. There is apparently no way to stop receiving the GoDaddy Blog newsletter. Therefore, the unsubscribe at the bottom of the newsletter, while expected, doesn't actually help in unsubscribing from the received emails.
I am marking this newsletter as SPAM to Gmail, but it would be nice if the unsubscribe would work properly.
I don't understand why you don't want Newsletter emails as they are helpful in many ways.