Websites using Microsoft 365 for email

12.59% route mail through Microsoft 365 2.13 million of 16.88 million domains that publish MX records, DNS sweep of Sep 2026

High-authority sites

Ordered by Open Page Rank, the domain's authority score from the open web link graph.

#	Website	OPROpen Page Rank
1	microsoft.com	9.54
2	github.com	9.52
3	godaddy.com	9.38
4	who.int	9.26
5	outlook.com	9.23
6	un.org	9.21
7	live.com	9.20
8	mit.edu	9.18
9	macromedia.com	9.17
10	cnn.com	9.16
11	ftc.gov	9.16
12	nasa.gov	9.15
13	epa.gov	9.13
14	nist.gov	9.12
15	xing.com	9.12
16	afternic.com	9.11
17	pewresearch.org	9.11
18	usatoday.com	9.08
19	sagepub.com	9.07
20	state.gov	9.07
21	frontiersin.org	9.06
22	unesco.org	9.06
23	dailymail.co.uk	9.05
24	ed.gov	9.05
25	bizjournals.com	9.04
26	iso.org	9.04
27	matomo.org	9.04
28	msn.com	9.04
29	ny.gov	9.04
30	cpanel.net	9.03
31	oecd.org	9.03
32	oup.com	9.03
33	userway.org	9.03
34	apnews.com	9.02
35	nps.gov	9.02
36	bbb.org	9.01
37	psu.edu	9.01
38	yale.edu	9.01
39	dol.gov	9.00
40	psychologytoday.com	9.00
41	healthline.com	8.98
42	jstor.org	8.98
43	marriott.com	8.98
44	ohchr.org	8.98
45	princeton.edu	8.98
46	meti.go.jp	8.97
47	globenewswire.com	8.96
48	spiegel.de	8.96
49	ethz.ch	8.95
50	lefigaro.fr	8.95
51	mynavi.jp	8.95
52	nsw.gov.au	8.95
53	usgs.gov	8.95
54	fcc.gov	8.94
55	ipcc.ch	8.93
56	maine.gov	8.93
57	wa.gov	8.93
58	dot.gov	8.90
59	nationalgeographic.com	8.90
60	newsweek.com	8.90
61	boe.es	8.89
62	hbs.edu	8.89
63	imf.org	8.89
64	nvidia.com	8.89
65	duke.edu	8.88
66	osha.gov	8.88
67	samhsa.gov	8.88
68	sueddeutsche.de	8.87
69	variety.com	8.87
70	eff.org	8.86
71	nami.org	8.86
72	purdue.edu	8.86
73	iea.org	8.85
74	ilo.org	8.85
75	jst.go.jp	8.84
76	politico.com	8.84
77	dw.com	8.83
78	medicalnewstoday.com	8.83
79	sap.com	8.83
80	typekit.com	8.83
81	unc.edu	8.83
82	youradchoices.ca	8.82
83	euronews.com	8.81
84	hud.gov	8.81
85	lww.com	8.81
86	rollingstone.com	8.81
87	soumu.go.jp	8.81
88	undp.org	8.81
89	utoronto.ca	8.81
90	zeit.de	8.81
91	forrester.com	8.80
92	redcross.org	8.80
93	sfu.ca	8.80
94	shrm.org	8.80
95	hrw.org	8.79
96	playstation.com	8.78
97	technologyreview.com	8.78
98	unep.org	8.78
99	welt.de	8.78
100	adweek.com	8.77

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Websites using Microsoft 365 for email

High-authority sites

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