Home / Groups / Fortune 500 / Mimecast
Mimecast among the Fortune 500
Mimecast was detected on 23 of 472 crawled Fortune 500 company websites, a share of 4.9%.
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 Mimecast | Share |
|---|---|---|---|
| Inc 5000 (2026) | 4,888 | 97 | 2.0% |
| Y Combinator companies | 5,386 | 18 | 0.3% |
| Fortune 500 | 472 | 23 | 4.9% |
| Unicorns | 1,000 | 51 | 5.1% |
| SaaS companies | 8,173 | 163 | 2.0% |
| Tranco top 10,000 | 1,572 | 31 | 2.0% |
472 of the 472 Fortune 500 domains fetched so far returned a usable record and form the denominator. 472 were counted from a rendered homepage crawl on 4 September 2026, 0 from a plain fetch only, and 0 returned no usable record. The list holds 500 domains; the rest have not been crawled yet. Company list: Fortune 500 list, 2026 edition. <5 means fewer than 5 crawled domains in that group. Rank 2 of the 2 Email Security tools published for this group.
Software used by the Fortune 500 · Email Security across all groups
Source: Installmap crawl, 4 September 2026
Badge
<a href="https://installmap.com/groups/fortune500/mimecast"><img src="https://installmap.com/badges/fortune500/mimecast.svg" alt="Mimecast runs on 23 of 472 crawled Fortune 500 companies (4.9%)"></a>
[](https://installmap.com/groups/fortune500/mimecast)
Badge URL: https://installmap.com/badges/fortune500/mimecast.svg · all badges.
Cite this
Installmap, Mimecast among the Fortune 500, crawl of 4 September 2026, https://installmap.com/groups/fortune500/mimecast.
Other Email Security tools in this group
- Proofpoint 46.6%