Websites Powered by Microsoft 365
3,014,636 websites tracked using Microsoft 365 (Webmail) · www.microsoft.com
Microsoft 365 is a webmail interface for reading email in a browser. Its official site is microsoft.com. PoweredBy tracks the websites that use Microsoft 365 across the public web; the tracked counts, adoption trend, and site list on this page are updated from our ongoing crawl of the webmail ecosystem.
Usage trend
500K
1M
1.5M
2M
Aug 2022
Aug 2023
Aug 2024
Aug 2025
Aug 2026
Domains observed using Microsoft 365 in each month's HTTP Archive crawl,
Aug 2022 to Aug 2026 · peak 1,637,988 in Mar 2026. The tracked total above also
counts sites not re-crawled recently.
Core Web Vitals
LCP 1.8 s
INP 75 ms
CLS 0
TTFB 800 ms
Median site among 1,400,793 Microsoft 365 sites with Chrome UX data, p75 values, Aug 2026.
Top countries
United States
463,081
United Kingdom
167,042
Germany
135,802
Canada
108,907
India
102,571
Netherlands
97,414
Australia
93,854
France
89,127
Sites using Microsoft 365 by audience country, Chrome UX Report.
Top sites by authority
9+
17% · 64 of 372 sites
8+
24% · 1,815 of 7,677 sites
7+
23% · 10,501 of 45,712 sites
6+
22% · 24,517 of 110,136 sites
5+
20% · 49,547 of 246,751 sites
The share of the web's most authoritative domains, by Open Page Rank tier, seen running Microsoft 365 in recent crawls. Only 372 domains worldwide score 9 or higher.
Websites using Microsoft 365
| # | Domain | Open Page RankOPR | Est. monthly visits (US)Visits (US) | Keywords | First seen |
|---|---|---|---|---|---|
| 901 | delish.com | 8.31/10 | 3,995,600 | 1,173,979 | May 2025 |
| 902 | womenshealthmag.com | 8.31/10 | 925,000 | 654,603 | May 2025 |
| 903 | comptia.org | 8.31/10 | 114,300 | 26,830 | Aug 2022 |
| 904 | asha.org | 8.31/10 | 252,400 | 50,669 | Aug 2022 |
| 905 | cleveland.com | 8.31/10 | 862,300 | 551,230 | Aug 2022 |
| 906 | irena.org | 8.31/10 | 20,200 | 11,442 | Aug 2022 |
| 907 | mediaset.it | 8.31/10 | - | 1 | Aug 2022 |
| 908 | wm.edu | 8.31/10 | 210,900 | 51,291 | Aug 2022 |
| 909 | wvu.edu | 8.31/10 | 89,800 | 17,348 | Aug 2022 |
| 910 | oxfam.org | 8.31/10 | 13,900 | 7,210 | Aug 2022 |
| 911 | uab.edu | 8.31/10 | 332,800 | 129,887 | Aug 2022 |
| 912 | neh.gov | 8.31/10 | 216,500 | 37,159 | Aug 2022 |
| 913 | ncmec.org | 8.30/10 | 39 | 13 | Mar 2023 |
| 914 | successfactors.com | 8.30/10 | - | - | Aug 2022 |
| 915 | brightedge.com | 8.30/10 | 9,800 | 4,007 | Aug 2022 |
| 916 | anwalt.de | 8.30/10 | 850 | 1,348 | Aug 2022 |
| 917 | tsinghua.edu.cn | 8.30/10 | 17,600 | 2,428 | Aug 2022 |
| 918 | lilly.com | 8.30/10 | 205,900 | 25,401 | Mar 2023 |
| 919 | movember.com | 8.30/10 | 250 | 126 | Aug 2022 |
| 920 | bsigroup.com | 8.30/10 | 15,900 | 4,873 | Aug 2022 |
| 921 | socialpilot.co | 8.30/10 | 54,400 | 32,176 | Feb 2026 |
| 922 | clarin.com | 8.30/10 | 122,800 | 192,255 | Aug 2022 |
| 923 | iccwbo.org | 8.30/10 | 19,900 | 10,394 | Aug 2022 |
| 924 | lalibre.be | 8.30/10 | 2,400 | 5,108 | Aug 2022 |
| 925 | rotary.org | 8.30/10 | 73,100 | 17,519 | Aug 2022 |
| 926 | choicehotels.com | 8.30/10 | 2,772,100 | 448,027 | Jan 2024 |
| 927 | buzzsumo.com | 8.30/10 | 4,500 | 3,947 | May 2024 |
| 928 | savethechildren.org | 8.30/10 | 69,800 | 18,735 | Aug 2022 |
| 929 | brill.com | 8.30/10 | 75,200 | 68,231 | Aug 2022 |
| 930 | fairwork.gov.au | 8.30/10 | 32,100 | 33,890 | Dec 2024 |
| 931 | aaas.org | 8.30/10 | 89,200 | 21,174 | Aug 2022 |
| 932 | access-board.gov | 8.30/10 | 138,500 | 73,654 | Aug 2022 |
| 933 | familysearch.org | 8.30/10 | 1,532,100 | 376,803 | Aug 2022 |
| 934 | servicesaustralia.gov.au | 8.30/10 | 51,300 | 40,154 | Mar 2026 |
| 935 | exeter.ac.uk | 8.30/10 | 19,000 | 11,669 | Aug 2022 |
| 936 | ebu.ch | 8.30/10 | 5,200 | 1,888 | Mar 2024 |
| 937 | okstate.edu | 8.30/10 | - | - | Aug 2025 |
| 938 | azleg.gov | 8.30/10 | 175,500 | 66,687 | Aug 2022 |
| 939 | carleton.ca | 8.30/10 | 49,300 | 20,005 | Aug 2022 |
| 940 | up.pt | 8.30/10 | 2,100 | 1,076 | Aug 2022 |
| 941 | dal.ca | 8.30/10 | 26,100 | 12,945 | Aug 2022 |
| 942 | berliner-zeitung.de | 8.30/10 | 8,200 | 2,726 | Aug 2022 |
| 943 | acer.com | 8.29/10 | 221,100 | 40,376 | Aug 2022 |
| 944 | cdp.net | 8.29/10 | 18,000 | 16,010 | Aug 2022 |
| 945 | rocketcdn.me | 8.29/10 | 410 | 215 | Oct 2024 |
| 946 | arm.com | 8.29/10 | 171,800 | 8,174 | Aug 2022 |
| 947 | udc.es | 8.29/10 | 280 | 628 | Aug 2022 |
| 948 | cardiff.ac.uk | 8.29/10 | 22,900 | 8,882 | Aug 2022 |
| 949 | marvel.com | 8.29/10 | 3,882,400 | 365,130 | Jan 2026 |
| 950 | iupui.edu | 8.29/10 | - | - | Oct 2022 |
| 951 | karger.com | 8.29/10 | 45,300 | 54,675 | Aug 2022 |
| 952 | telstra.com.au | 8.29/10 | 25,000 | 34,226 | Aug 2022 |
| 953 | study.com | 8.29/10 | 8,800,400 | 2,896,548 | Aug 2022 |
| 954 | cuhk.edu.hk | 8.29/10 | 5,100 | 1,878 | Aug 2022 |
| 955 | indiewire.com | 8.29/10 | 728,400 | 293,806 | Aug 2022 |
| 956 | autismspeaks.org | 8.29/10 | 294,300 | 52,583 | Aug 2022 |
| 957 | ncl.ac.uk | 8.29/10 | 50,900 | 15,860 | Aug 2022 |
| 958 | nm.gov | 8.29/10 | 34,700 | 5,251 | Aug 2022 |
| 959 | habitat.org | 8.29/10 | 919,300 | 205,219 | Aug 2022 |
| 960 | iisd.org | 8.29/10 | 104,800 | 9,946 | Aug 2022 |
| 961 | indigo.ca | 8.29/10 | 95,300 | 213,680 | Aug 2022 |
| 962 | nhm.ac.uk | 8.29/10 | 1,827,300 | 156,874 | Aug 2022 |
| 963 | splcenter.org | 8.29/10 | 246,800 | 32,092 | Aug 2022 |
| 964 | rpi.edu | 8.29/10 | 48,000 | 6,018 | Sep 2023 |
| 965 | baylor.edu | 8.29/10 | 93,700 | 12,866 | Aug 2022 |
| 966 | mi.gov | 8.29/10 | - | - | Aug 2022 |
| 967 | csa-research.com | 8.28/10 | 960 | 1,320 | Aug 2022 |
| 968 | saferinternet.at | 8.28/10 | 21 | 106 | Aug 2022 |
| 969 | worldanimalprotection.org | 8.28/10 | 76,100 | 7,474 | Aug 2022 |
| 970 | zend.com | 8.28/10 | 2,700 | 1,350 | Aug 2022 |
| 971 | ncaa.com | 8.28/10 | 6,489,100 | 711,917 | Jul 2025 |
| 972 | marketresearchfuture.com | 8.28/10 | 9,600 | 14,502 | Aug 2022 |
| 973 | stuttgart.de | 8.28/10 | 6,500 | 2,016 | Aug 2022 |
| 974 | unilever.com | 8.28/10 | 91,400 | 30,357 | Aug 2022 |
| 975 | govtech.com | 8.28/10 | 46,000 | 54,537 | Aug 2022 |
| 976 | rarediseases.org | 8.28/10 | 418,300 | 61,592 | Aug 2022 |
| 977 | pantone.com | 8.28/10 | 219,700 | 67,659 | Mar 2026 |
| 978 | ama.org | 8.28/10 | 430,800 | 21,311 | Aug 2022 |
| 979 | icao.int | 8.28/10 | 38,400 | 10,708 | Nov 2022 |
| 980 | donotcall.gov | 8.28/10 | 221,200 | 12,041 | Jun 2024 |
| 981 | open.ac.uk | 8.28/10 | 15,700 | 12,237 | Aug 2022 |
| 982 | umanitoba.ca | 8.28/10 | 25,600 | 17,260 | Feb 2024 |
| 983 | oscars.org | 8.28/10 | 575,800 | 48,741 | Aug 2022 |
| 984 | uc3m.es | 8.28/10 | 6,600 | 5,330 | Aug 2022 |
| 985 | auburn.edu | 8.28/10 | 270,500 | 32,835 | Mar 2024 |
| 986 | universityofcalifornia.edu | 8.28/10 | 204,600 | 56,692 | Aug 2022 |
| 987 | unu.edu | 8.28/10 | 16,800 | 5,872 | Aug 2022 |
| 988 | griffith.edu.au | 8.28/10 | 13,200 | 13,377 | Sep 2024 |
| 989 | tsukuba.ac.jp | 8.28/10 | 1,800 | 517 | Aug 2022 |
| 990 | kyushu-u.ac.jp | 8.28/10 | 680 | 731 | Aug 2022 |
| 991 | infoseek.co.jp | 8.28/10 | 53 | 10 | Aug 2022 |
| 992 | netsafe.org.nz | 8.27/10 | 1,600 | 980 | Aug 2022 |
| 993 | gbif.org | 8.27/10 | 160,000 | 38,071 | Aug 2022 |
| 994 | helpnetsecurity.com | 8.27/10 | 9,700 | 15,286 | Sep 2024 |
| 995 | understandingwar.org | 8.27/10 | 107,100 | 45,059 | Aug 2022 |
| 996 | coag.gov | 8.27/10 | 11,700 | 2,059 | Aug 2022 |
| 997 | ncpgambling.org | 8.27/10 | 12,300 | 2,402 | Aug 2022 |
| 998 | com.ru | 8.27/10 | - | - | Aug 2022 |
| 999 | gm.com | 8.27/10 | 1,053,900 | 42,694 | Oct 2024 |
| 1000 | nursingworld.org | 8.27/10 | 427,000 | 67,696 | Nov 2022 |
Open Page Rank is the domain's authority score (0 to 10, from the open web link graph); the list is ordered by it and covers sites seen in recent crawls. Visits and keywords are estimated US organic search figures.
Download top 10,000 as CSV (zip) →
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