Is Mimecast or One.com more popular?

Mimecast is used by more websites in our catalog: 11,342 use Mimecast and 770 use One.com.

Does Mimecast or One.com have higher-authority sites?

Mimecast sites have the higher median Ahrefs Domain Rating (Mimecast: 51, One.com: 22).

Is Mimecast or One.com growing faster?

Between 2026-06 and 2026-07, Mimecast went from 1.6% to 1.3% of all tracked sites, while One.com went from 0.10% to 0.09%. One.com is gaining ground faster in our index.

Can a site use both Mimecast and One.com?

No. A site runs a single email host, so Mimecast and One.com are mutually exclusive.

Where does this Mimecast vs One.com data come from?

Adoption is counted from Site Stats Database's own crawl; Domain Rating comes from Ahrefs and traffic from DataForSEO. Figures reflect the sites we track and refresh at least monthly.

Mimecast vs One.com — Site Stats Database

Mimecast vs One.com

A side-by-side comparison of two email hosting providers, based on the 736,999 Email Host sites tracked by Site Stats Database.

Last updated July 1, 2026

Metric	Mimecast	One.com
Websites	11,342	770
Market share	1.5%	0.10%
Share of top 10K sites	4.2%	0.00%
Share of top 100K sites

Rank	#8	#45

Median DR	51	22

Average DR	48	23

Median keywords	2,113	551

Median referring domains	1,075	287

Median domain age	24 yrs	10 yrs

Average domain age	22 yrs	11 yrs

Average monthly traffic	372,032	11,796

Combined monthly traffic	4,219,586,311	9,082,602

clevelandclinic.org
LanguageEnglish
DR (Ahrefs)92
Total Keywords5,266,698
Referring Domains262,751
Domain Age28 yrs
Traffic (Jun 2026)536,244,433
Traffic Trend
TechnologyMimecast
cambridge.org
Language
DR (Ahrefs)92
Total Keywords4,651,462
Referring Domains357,733
Domain Age28 yrs
Traffic (Jun 2026)527,148,452
Traffic Trend
TechnologyMimecast
nfl.com
LanguageEnglish
DR (Ahrefs)89
Total Keywords947,630
Referring Domains147,040
Domain Age30 yrs
Traffic (Jun 2026)275,712,888
Traffic Trend
TechnologyMimecast
gettyimages.com
LanguageEnglish
DR (Ahrefs)89
Total Keywords5,589,590
Referring Domains272,498
Domain Age27 yrs
Traffic (Jun 2026)146,264,162
Traffic Trend
TechnologyMimecast
istockphoto.com
LanguageEnglish
DR (Ahrefs)91
Total Keywords4,131,936
Referring Domains1,685,041
Domain Age26 yrs
Traffic (Jun 2026)127,970,606
Traffic Trend
TechnologyMimecast
cvs.com
LanguageEnglish
DR (Ahrefs)84
Total Keywords1,535,152
Referring Domains55,537
Domain Age30 yrs
Traffic (Jun 2026)71,302,734
Traffic Trend
TechnologyMimecast
forbes.com
LanguageEnglish
DR (Ahrefs)94
Total Keywords5,061,816
Referring Domains1,192,610
Domain Age33 yrs
Traffic (Jun 2026)69,613,575
Traffic Trend
TechnologyMimecast
weatherbug.com
LanguageEnglish
DR (Ahrefs)77
Total Keywords780,575
Referring Domains11,435
Domain Age26 yrs
Traffic (Jun 2026)66,263,733
Traffic Trend
TechnologyMimecast
petmd.com
LanguageEnglish
DR (Ahrefs)85
Total Keywords827,963
Referring Domains49,308
Domain Age28 yrs
Traffic (Jun 2026)60,196,625
Traffic Trend
TechnologyMimecast
autozone.com
Language
DR (Ahrefs)78
Total Keywords1,406,463
Referring Domains30,776
Domain Age30 yrs
Traffic (Jun 2026)52,596,499
Traffic Trend
TechnologyMimecast

Website	Language	DR (Ahrefs)	Total Keywords	Referring Domains	Domain Age	Traffic (Jun 2026)	Traffic Trend	Technology
clevelandclinic.org	English	92	5,266,698	262,751	28 yrs	536,244,433		Mimecast

wordhelp.com
LanguageEnglish
DR (Ahrefs)24
Total Keywords124,681
Referring Domains2,658
Domain Age21 yrs
Traffic (Jun 2026)627,625
Traffic Trend
TechnologyOne.com
sportsgambler.com
LanguageEnglish
DR (Ahrefs)52
Total Keywords105,411
Referring Domains6,570
Domain Age30 yrs
Traffic (Jun 2026)539,924
Traffic Trend
TechnologyOne.com
ascii-code.com
LanguageEnglish
DR (Ahrefs)73
Total Keywords11,886
Referring Domains3,574
Domain Age19 yrs
Traffic (Jun 2026)420,684
Traffic Trend
TechnologyOne.com
kodub.com
LanguageEnglish
DR (Ahrefs)45
Total Keywords279
Referring Domains135
Domain Age9 yrs
Traffic (Jun 2026)373,269
Traffic Trend
TechnologyOne.com
periodictable.one
LanguageEnglish
DR (Ahrefs)44
Total Keywords21,911
Referring Domains137
Domain Age7 yrs
Traffic (Jun 2026)306,692
Traffic Trend
TechnologyOne.com
grimfrost.com
LanguageEnglish
DR (Ahrefs)48
Total Keywords8,599
Referring Domains974
Domain Age11 yrs
Traffic (Jun 2026)301,658
Traffic Trend
TechnologyOne.com
mynoise.net
LanguageEnglish
DR (Ahrefs)72
Total Keywords15,270
Referring Domains5,869
Domain Age13 yrs
Traffic (Jun 2026)257,830
Traffic Trend
TechnologyOne.com
datavizcatalogue.com
LanguageEnglish
DR (Ahrefs)71
Total Keywords3,815
Referring Domains2,362
Domain Age12 yrs
Traffic (Jun 2026)242,515
Traffic Trend
Technology
synonymordboka.no
LanguageNorwegian
DR (Ahrefs)25
Total Keywords37,957
Referring Domains1,909
Domain Age11 yrs
Traffic (Jun 2026)221,406
Traffic Trend
TechnologyOne.com
sunshineseeker.com
LanguageEnglish
DR (Ahrefs)39
Total Keywords11,110
Referring Domains1,315
Domain Age10 yrs
Traffic (Jun 2026)221,378
Traffic Trend
TechnologyOne.com