Thank you for checking. If the from email, ends in @whatnext.com, the opportunity is real. From time to time we are approached by different researchers to help them find folks to participate in various market research opportunities. When we have these opportunities we email WhatNexters who MIGHT qualify. I suspect that is the type of email you received.
Please note that at no time do we share any of your personal information with any third parties. The only way they might know you exist is if you qualify for study and give us explicit approval to share your information so you can participate.
I hope this helps.