With Gmail you can add a plus to the end of your email address followed by a label I.E. example+label@gmail.com. This works the same as your regular email but you can use the plus label to filter or automatically delete mails. It’s also useful when you don’t trust a company to add the company name after the plus to see of they sell your email to third parties.

Accio Police

My guess would be the assumption that he has friends in the vape industry? No proof of that, that’s the only way is can see this being monitarily motivated.