Most popular email host

Many companies use professional email services. Having an sales@mycompany.com looks much better than using sexy_lizard89@hotmail.com. These statistics reflect what email provider is the most popular. (Keep in mind that any free email provider is automatically excluded).
This data has been retrieved by accessing the DNS MX records from all the domains in our database.
Top email hosters
# MX Host Amount
1 Google.com 223,181
2 Outlook.com 111,726
3 Googlemail.com 94,104
4 Secureserver.net 89,450
5 Qq.com 32,481
6 Registrar-servers.com 31,856
7 Ovh.net 30,784
8 Yandex.net 28,459
9 Zoho.com 19,596
10 Yandex.ru 18,274