I signed up to use the Persona feature. I was suppose to receive an email verification from Firefox. I kept requesting it be resent about 6 times because IT NEVER CAME. It is not my email (Thunderbird), there is a problem with it being sent to me -- please find out WHY the email verification was never sent -- was it because my domain has a number in it? Whatever the reason I never received a verification and therefore cannot use the feature. My user name was ks1phx.