According to Live Direct Marketing's daily Tranco top-1M scan (July 25, 2026), Pantheon is the SaaS sender for 82 domains — 0.01% of 634,220 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
Pantheon — managed WordPress and Drupal hosting platform whose local MTA can send site email.
We classify it as a SaaS sender from include: mechanisms in the SPF record matching a maintained provider rule. This is infrastructure attribution from public DNS, not evidence of a direct contract or exclusive use.
72.0% of its domains sit outside the top 100,000 — a long-tail footprint spread across smaller sites. It spans 10 TLDs, led by .org (37.8%) — a broad, internationally distributed base. The service most often seen alongside it is Microsoft 365 (mailbox provider), on 37.8% of its domains.
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 0 | 0.0% |
| Top 10,000 | 0 | 0.0% |
| Top 100,000 | 17 | 20.7% |
| Top 1,000,000 | 59 | 72.0% |
| Unranked | 6 | 7.3% |
| TLD | Domains | Share | |
|---|---|---|---|
| .org | 31 | 37.8% | |
| .com | 28 | 34.1% | |
| .edu | 11 | 13.4% | |
| .ca | 3 | 3.7% | |
| .gov | 3 | 3.7% | |
| .ac.uk | 2 | 2.4% | |
| .coop | 1 | 1.2% | |
| .org.uk | 1 | 1.2% | |
| .info | 1 | 1.2% | |
| .de | 1 | 1.2% |
Cross-tabulated from the same daily snapshot — the other email services seen on the same 82 domains.
| Type | Service | Domains | Share of Pantheon users |
|---|---|---|---|
| Mailbox | Microsoft 365 | 31 | 37.8% |
| Mailbox | Google Workspace | 29 | 35.4% |
| Mailbox | Proofpoint Essentials | 5 | 6.1% |
| Mailbox | Barracuda | 4 | 4.9% |
| Mailbox | Mimecast | 4 | 4.9% |
| Mailbox | Proofpoint | 2 | 2.4% |
See the full Pantheon data page (KPI cards, trend, sample domains) →
82 domains in the Tranco top-1M use Pantheon as their SaaS sender as of July 25, 2026 (0.01% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
Pantheon accounts for 0.01% of SPF-publishing domains in the top 1M. Whether you should seed a test mailbox there depends on how much of your audience it represents — the co-usage table above shows the services it appears alongside most.
Pantheon's largest TLD is .org (37.8% of its domains); it appears across 10 TLDs in total.