Someone submitted it recently but it was flagged quickly. Undeservedly in my opinion as the service seems very useful - it's just like your own personal copy of Mailinator, therefore practically impossible to blacklist.
Thanks, I don't know very well how HN works so I posted it to inform the community.
I know there are a lot of similar services but the first goal 6-7 years ago was to learn how to build this in PHP and it was a success.
eXorus - MailCare.io Founder