I've just notice that in the last 10 days, no email registration happened at steemyy.com. This is unusual and I investigated and fixed the problem.
The problem was the email system was blocked due to sending out multiple emails to fake emails e.g. previous known spam accounts @aispamer
I am using zoho.com which triggers the "unusual activities":
I became aware of this when somebody said to me he didn't get any emails.
Luckily to unblock it is just one click. At the meantime, I added a short interval between sending emails, to reduce the chances of system being flagged.
If you haven't got email notification, do contact me