I’ve participated in this sort of thing with Medium before. I also received the voucher for Amazon, they just made me sign a digital none disclosure agreement. Which is fair enough. But yeah the emails did all come from a <name>@medium.com

If this is a scam, its a well researched one. Good you pointed it out, because I can see plenty of people falling for it.

Writer of fiction, blogs and erotica. Frequency in that order. Popularity in reverse.

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store