https://mobile.twitter.com/YoBit_News/status/1143600873261740033 Attention! Yobit never asks you to create yobicodes or any payments. Never send your info to scammers by email, Telegram or Twitter! Yobit supports never ask your money for solving problems or account activation. We don't have any private or special Invest Boxes. Beware of scams
As pointed by tryninja this is an old scam, it had been around for months if not years.
You're basically sending a gift code to a scammer and he asks for you not to redeem it so he can

But I'm curios about two things
How did you get that email and what is the date on it?
The little russian I know makes me believe it is at least 3 months old.