Sendowl does not send spam emails. They send out the license email when a purchase is made, and in this case, they send out a email to people that made a purchase that a free upgrade is available. We can't make any guarantees that everyone will get the email, and we don't have total control over where the email comes from or how its generated because its generated from them. They have their own infrastructure, their own email setup, and their own controls. If the email said it came from esimgames, but all the dns settings used to verify email sources say it comes from sendowl, then it will definitely be tagged as spam, so that would be a mistake. Entire boring books could be written on this spammy subject, but hopefully that explains it better.