Whenever someone signs up at Snhyper , we take their snhyper-id and create an email alias in the form of snhyper-id@snhyper.com. So e.g. during sign up, if you chose jcena as your snhyper-id, then your snhyper.com email alias would be jcena@snhyper.com
Any email sent at this address by any of your Snhyper contacts is delivered to YOU as a snhype.
Similarly, if YOU send an email to any of your Snhyper contacts' snhyper.com email alias using your primary email (the one you signed up at Snhyper with) , it will be delivered to THEM as a snhype.