Has anyone noticed that every entry in the top ten on http://emailclientmarketshare.com/ has fallen this month.
The 'change' figure accross all ten equals -10.5%. It looks as if some client(s) outside of the leaderboard have suddenly taken up a big chunk of market share. The top ten ten now only total 83%.

I'm hoping this is just a glitch in the stats. Anyone have any insights?

Current Leaderboard for reference:
Apple iPhone 26% -2.76
Gmail 24% -1.52
Apple iPad 8% -0.52
Apple Mail 7% -0.92
Outlook 7% -0.99
Samsung Mail 4% -0.8
Outlook.com 3% -0.45
Google Android 2% -0.46
Yahoo! Mail 1% -2.07
Windows Live Mail 1% -0.03