I run an app on the Google Play store and lately I've been receiving a lot of spam from an app developer, GeaxGame and their poker game. They've been spamming my app's support email address which is interesting. They all seem to be originating from Gmail accounts and they are quite persistent. How are they, or other companies like them, obtaining these Gmail accounts and sending these emails out? Any help is much appreciated. Thanks! I've attached a few screenshots of my inbox to show you what I mean.