I would call it RockMail or some other sort of strong or hard name. You don't become the punch line of jokes if your product fails in it's security purpose lik

I would call it RockMail or some other sort of strong or hard name. You don't become the punch line of jokes if your product fails in it's security purpose like you would get wtih SafeMail or SecureMail, but you don't have the nefarious naming that DarkMail gives. Also RockMail fits with the Lavabit / Magma naming scheme Lavar has for his company and software. Or they can call it WhisperMail, QuietMail, FlutterMail, InvisibleMail or SilentMail to fit with silent circle's naming scheme.