Business Email Hosting Usage Distribution in the Top 1 Million Sites

Statistics for websites using Business Email Hosting providers

Technology	Websites	%
Google Apps for Business	157,600	15.76
Microsoft Exchange Online	140,174	14.02
Office 365 Mail	130,791	13.08
Mimecast	13,412	1.34
Zoho Mail	13,032	1.3
Elastic Email	4,443	0.44
Rackspace Email Hosting	3,186	0.32
Zimbra	2,595	0.26
Symantec.cloud	2,150	0.22
Namecheap Private Email	1,677	0.17
Dyn	1,517	0.15
TrendMicro Email Services	1,423	0.14
Exclaimer	1,403	0.14
SpamExperts	1,067	0.11
Intermedia	493	0.05
Blackboard	450	0.04
Migadu	391	0.04
LINE WORKS	388	0.04
Yahoo! Business Email	322	0.03
Google Postini Services	305	0.03
easyDNS Mail	203	0.02
Securence	170	0.02
FuseMail	168	0.02
Everyone.net	118	0.01
Network Solutions Email Hosting	108	0.01
Spam Hero	100	0.01
Sentia	98	0.01
MX-Relay	79	0.01
bexio	61	0.01
Synaq	56	0.01
Diligent	56	0.01
BlueTie	51	0.01
Pobox	51	0.01
Blackberry Internet Service	38	0
ISPrime	37	0
Black Pearl Mail	29	0
Soverin	18	0
Sprint Business	14	0
Pantera Tools	9	0
Apptix	7	0
Permido	7	0
Anti Spam Engine	5	0
Kerjamail	4	0
MailHappen	3	0
MailWish	2	0
MD OfficeMail	2	0