The service turns the requesting user's e-mail address into a Microsoft account. Users may also choose a password of their own choice. Sign up for a Microsoft e-mail address: Users can also sign up for an e-mail account with Microsoft's webmail services designated domains (i.e. @hotmail.com, @live.com, @msn.com, @passport.com and @outlook.com or any variant for a specific country) that can be used as a Microsoft account to sign into other Microsoft account-enabled websites.