If you signed up for an account, then technically, they're exempt under the "transactional or relationship messages." exception[1]. The wording is broad enough,

If you signed up for an account, then technically, they're exempt under the "transactional or relationship messages." exception[1]. The wording is broad enough, that combined with their TOS, you pretty much end up agreeing to get any emails they want to send you. [1] http://www.law.cornell.edu/uscode/text/15/7702#17 http://www.law.cornell.edu/uscode/text/15/7702#17