I was "trying" Firefox Hello but when I tried to use it for the first time, to connect with anyone I'd know, I was only given the choice of using Gmail or Yahoo as sources for email links. I primarily use Outlook and any contact I'd care to connect with would be located there. When the "Choose an application" window came up showing only Gmail and Yahoo, I clicked to find another app to use and have no idea how to find/connect with my Outlook app for email links. The Firefox app shows no way to access any other kind of email and I think that's damned short-sighted and arrogant of Firefox to not allow for customers/users of their app to access email links by other means!