Home / Groups / Inc 5000 (2026) / Microsoft 365
Microsoft 365 among the Inc 5000
Microsoft 365 was detected on 2,258 of 4,888 crawled Inc 5000 company websites, a share of 46.2%.
Read from each domain's MX record, and for domains behind an email gateway from its SPF record, not from the homepage.
| Group | Crawled | Running Microsoft 365 | Share |
|---|---|---|---|
| Inc 5000 (2026) | 4,888 | 2,258 | 46.2% |
| Y Combinator companies | 5,386 | 279 | 5.2% |
| Fortune 500 | 472 | 171 | 36.2% |
| Unicorns | 1,000 | 199 | 19.9% |
| SaaS companies | 8,173 | 1,773 | 21.7% |
| Tranco top 10,000 | 1,572 | 260 | 16.5% |
4,888 of 4,969 Inc 5000 domains returned a usable record and form the denominator. 4,814 were counted from a rendered homepage crawl on 4 September 2026, 74 from a plain fetch only, and 81 returned no usable record. Email hosting and email security are read from each domain's MX and SPF records, for the same domains. Company list: Inc 5000 2026 list. <5 means fewer than 5 crawled domains in that group. Rank 1 of the 5 Email Hosting tools published for this group.
Software used by the Inc 5000 · Email Hosting across all groups
By size band
| Size band | Crawled | Running Microsoft 365 | Share |
|---|---|---|---|
| 1-10 | 436 | 147 | 33.7% |
| 11-50 | 2,022 | 834 | 41.2% |
| 51-200 | 1,469 | 726 | 49.4% |
| 201-500 | 528 | 286 | 54.2% |
| 501-1000 | 222 | 130 | 58.6% |
| 1001-5000 | 175 | 111 | 63.4% |
By industry
| Industry | Crawled | Running Microsoft 365 | Share |
|---|---|---|---|
| Advertising, Marketing & PR | 439 | 85 | 19.4% |
| Healthcare & Medical | 423 | 207 | 48.9% |
| Financial Services | 411 | 227 | 55.2% |
| IT Services | 388 | 282 | 72.7% |
| Software | 352 | 112 | 31.8% |
| Business & Corporate Services | 311 | 161 | 51.8% |
| Construction | 307 | 161 | 52.4% |
| Consumer Products | 261 | 59 | 22.6% |
| Legal | 187 | 114 | 61.0% |
| Food & Beverage | 167 | 66 | 39.5% |
| Logistics & Transportation | 158 | 69 | 43.7% |
| Government Services | 158 | 121 | 76.6% |
| Manufacturing | 154 | 90 | 58.4% |
| Human Resources | 133 | 76 | 57.1% |
| Consumer Services | 126 | 38 | 30.2% |
| Artificial Intelligence & Data | 125 | 37 | 29.6% |
| Real Estate | 113 | 41 | 36.3% |
By state
| State | Crawled | Running Microsoft 365 | Share |
|---|---|---|---|
| California | 645 | 208 | 32.2% |
| Texas | 498 | 247 | 49.6% |
| Florida | 457 | 215 | 47.0% |
| New York | 331 | 123 | 37.2% |
| Virginia | 237 | 150 | 63.3% |
| Georgia | 227 | 103 | 45.4% |
| Illinois | 224 | 100 | 44.6% |
| Pennsylvania | 156 | 71 | 45.5% |
| New Jersey | 146 | 75 | 51.4% |
| Colorado | 132 | 62 | 47.0% |
| Arizona | 130 | 60 | 46.2% |
| North Carolina | 127 | 54 | 42.5% |
| Ohio | 125 | 81 | 64.8% |
| Massachusetts | 122 | 41 | 33.6% |
| Maryland | 118 | 77 | 65.3% |
| Tennessee | 102 | 62 | 60.8% |
Source: Installmap crawl, 4 September 2026
Badge
<a href="https://installmap.com/groups/inc5000_2026/microsoft-365"><img src="https://installmap.com/badges/inc5000_2026/microsoft-365.svg" alt="Microsoft 365 is the most detected Email Hosting tool among the Inc 5000: 2,258 of 4,888 crawled Inc 5000 companies (46.2%)"></a>
[](https://installmap.com/groups/inc5000_2026/microsoft-365)
Badge URL: https://installmap.com/badges/inc5000_2026/microsoft-365.svg · all badges.
Cite this
Installmap, Microsoft 365 among the Inc 5000, crawl of 4 September 2026, https://installmap.com/groups/inc5000_2026/microsoft-365.
Other Email Hosting tools in this group
- Google Workspace 43.4%
- Zoho Mail 0.3%
- GoDaddy Email 0.2%
- IONOS Mail 0.2%
- Intermedia 0.1%
- Rackspace Email 0.1%