Just received this:-
"Dear ZTE Open user,
Thank you very much for purchasing from us.
In order to improve our products, we sincerely invite you to take our survey. Please open the link below and answer the quick questions. Your opinion is very important to us!
As always, we treat the issue of privacy with utmost seriousness - any personal information you have supplied us will remain confidential. Thanks for all your support!
The email was CC'ed to 337 discrete email addresses. Each email address listed in full view.
May I assume this was the total contingent who bought the ZTE Open device on eBay?