I think maybe your email had been sideline by scammers to be used to send scam offers to you, I don't know how legit yobit but I have about them to much for them to get into such cheap scam. Maybe you should watch out for where you put your email into, scams can get you email into there target list and keep sending your email using many exchanges, channels, project etc as possible to get your interest.
So unless the official yobit can confirm this with prove, I think this is a scam and your email is exposed to many possible scams now and in future.
Yobit definitely has a history of having supported or facilitated scams. They were said to develop one coin after another, list them on their own exchange and pump them. Nobody can prove it but it looked like it. In how far they actively scam this way, I don't know but once you are engaging in suspicious activities in general you must expect others to also suspect you for even more.
If you look at Yobit's history, which is fairly bad with regard to projects scams, it's best not to invest in the projects that Yobit offers.
There are still many other, more reliable exchanges, I have long since stopped investing in coins on the Yobit exchange. Because I did
have a bad experience when investing in Yobit, there are some coins that do have fake volume. And suddenly there was also one of
the coins that I got from the airdrop at Yobit, the price went up, but the coins couldn't be withdrawn, because the withdrawal feature is
in a maintenance condition in a very long time.
