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
| Metric | Amazon WorkMail/SES | Microsoft 365 |
|---|---|---|
| Websites | 2,237 | 159,483 |
| Market share | 0.30% | 22% |
| Share of top 10K sites | 0.43% | 23% |
| Share of top 100K sites |
|---|
| 0.34% |
| 24% |
| Rank | #25 | #2 |
|---|
| Median DR | 36 | 34 |
|---|
| Average DR | 38 | 36 |
|---|
| Median keywords | 1,400 | 1,062 |
|---|
| Median referring domains | 635 | 469 |
|---|
| Median domain age | 12 yrs | 19 yrs |
|---|
| Average domain age | 14 yrs | 18 yrs |
|---|
| Average monthly traffic | 139,920 | 124,094 |
|---|
| Combined monthly traffic | 313,001,680 | 19,790,892,765 |
|---|
A site runs one email host, so Amazon WorkMail/SES and Microsoft 365 are mutually exclusive.
Monthly snapshots of each segment, 2026-06 to 2026-07. Website counts move when our catalog grows; the share of tracked sites is normalized, so it only moves when real prevalence changes.
Websites
Share of tracked sites
Combined monthly traffic
2,237 websites · rank #25
Top industries
Top markets
159,483 websites · rank #2
Top industries
Top markets
Microsoft 365 is used by more websites in our catalog: 2,237 use Amazon WorkMail/SES and 159,483 use Microsoft 365.
Amazon WorkMail/SES sites have the higher median Ahrefs Domain Rating (Amazon WorkMail/SES: 36, Microsoft 365: 34).
Between 2026-06 and 2026-07, Amazon WorkMail/SES went from 0.31% to 0.25% of all tracked sites, while Microsoft 365 went from 21% to 18%. Amazon WorkMail/SES is gaining ground faster in our index.
No. A site runs a single email host, so Amazon WorkMail/SES and Microsoft 365 are mutually exclusive.
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.
Citation
Site Stats Database. "Amazon WorkMail/SES vs Microsoft 365." Site Stats Database, July 1, 2026. https://sitestatsdb.com/technologies/email-hosting/compare/amazon-workmail-ses-vs-microsoft-365
Site Stats Database tracks 2,237 websites using Amazon WorkMail/SES and 159,483 using Microsoft 365, each enriched with full monthly traffic history, authority, keywords, referring domains, and the complete detected tech stack. We detect every email host by crawling each site's HTML, response headers, and DNS; traffic and SEO metrics come from DataForSEO and Ahrefs. Everything refreshes at least monthly.
See plans & pricing| English |
| 85 |
| 85,882 |
| 29,865 |
| 20 yrs |
| 35,562,690 |
| Amazon WorkMail/SES |
| eonline.com | Irish | 85 | 1,116,296 | 197,175 | 30 yrs | 16,503,605 | Amazon WorkMail/SES |
| bbcgoodfood.com | English | 87 | 1,570,097 | 64,915 | 26 yrs | 13,787,086 | Amazon WorkMail/SES |
| mapsofworld.com | English | 70 | 512,560 | 28,794 | 26 yrs | 8,853,604 | Amazon WorkMail/SES |
| earthquaketrack.com | English | 62 | 23,729 | 4,184 | 15 yrs | 8,376,342 | Amazon WorkMail/SES |
| redcrossblood.org | 84 | 87,326 | 27,898 | 28 yrs | 8,055,817 | Amazon WorkMail/SES |
| myanimelist.net | English | 83 | 487,942 | 132,567 | 20 yrs | 8,047,545 | Amazon WorkMail/SES |
| usopen.org | 78 | 40,012 | 33,167 | 30 yrs | 6,957,795 | Amazon WorkMail/SES |
| natgeokids.com | English | 75 | 97,679 | 12,178 | 20 yrs | 5,476,136 | Amazon WorkMail/SES |
| English |
| 90 |
| 1,403,577 |
| 165,017 |
| 31 yrs |
| 376,727,145 |
| Microsoft 365 |
| adobe.com | English | 96 | 4,590,632 | 1,640,623 | 39 yrs | 293,123,914 | Microsoft 365 |
| healthline.com | English | 92 | 7,041,614 | 458,961 | 21 yrs | 220,346,497 | Microsoft 365 |
| microsoft.com | English | 96 | 3,038,378 | 2,803,353 | 35 yrs | 168,600,293 | Microsoft 365 |
| ca.gov | English | 93 | 3,288,410 | 475,784 | 28 yrs | 136,738,647 | Microsoft 365 |
| lowes.com | English | 88 | 4,826,414 | 158,334 | 31 yrs | 135,785,869 | Microsoft 365 |
| carfax.com | English | 90 | 1,945,867 | 47,295 | 28 yrs | 125,863,196 | Microsoft 365 |
| akc.org | English | 90 | 655,094 | 78,973 | 31 yrs | 125,727,029 | Microsoft 365 |
| nps.gov | English | 92 | 1,563,784 | 315,622 | 28 yrs | 121,452,048 | Microsoft 365 |