
more leeching
ooh look, another leech trying to make money off a huge company, what a surprise!
whether the emails are coming to a gmail user or through a 3rd party mailbox linked to a gmail account, at some stage in the process someone has signed up (either sender or recipient) to gmail and google then have a legal entitlement to scan those emails for virus/trojan content etc. so no surprise that they also use the scanning for targetted ads to make money off their otherwise free service which has been their core business model from day one.
Paris because she wouldn't object to you looking inside.