Only commenting on the last line, that doesn't really put it in perspective at all. A user could, if he so chose, have email addresses at their own domain, on

Only commenting on the last line, that doesn't really put it in perspective at all. A user could, if he so chose, have email addresses at their own domain, on Gmail, AND use Outlook to access it. There's a VERY blurry line between the usage patterns of the average mail user. That said, I agree with you in thinking the parent was underestimating Outlook's prevalence.