According to Live Direct Marketing's daily Tranco top-1M scan (July 13, 2026), Sophos Email (US) is the email service provider (ESP) for 172 domains — 0.03% of 617,702 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
Sophos Email (US) is an email service platform offered by Sophos for routing, processing, and delivering outbound mail. It functions as a mail infrastructure component for organisations seeking to manage their email sending.
The platform's footprint is concentrated among smaller organisations using .com domains rather than the largest global brands. It is discovered in email infrastructure through SPF include mechanisms, making it a routine reference point in sender reputation research and authentication audits. For deliverability professionals, Sophos Email (US) represents a steady but long-tail choice within the broader ESP ecosystem.
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 0 | 0.0% |
| Top 10,000 | 0 | 0.0% |
| Top 100,000 | 15 | 8.7% |
| Top 1,000,000 | 139 | 80.8% |
| Unranked | 18 | 10.5% |
| TLD | Domains | Share | |
|---|---|---|---|
| .com | 91 | 52.9% | |
| .org | 30 | 17.4% | |
| .gov | 6 | 3.5% | |
| .com.au | 6 | 3.5% | |
| .ca | 5 | 2.9% | |
| .edu | 4 | 2.3% | |
| .co.uk | 3 | 1.7% | |
| .ma | 2 | 1.2% | |
| .com.br | 2 | 1.2% | |
| .id | 2 | 1.2% |
Cross-tabulated from the same daily snapshot — the other email services seen on the same 172 domains.
| Type | Service | Domains | Share of Sophos Email (US) users |
|---|---|---|---|
| Mailbox | Sophos Email | 106 | 61.6% |
| Mailbox | Microsoft 365 | 49 | 28.5% |
| Mailbox | Google Workspace | 7 | 4.1% |
| Mailbox | Mimecast | 4 | 2.3% |
| Mailbox | Self-Hosted | 2 | 1.2% |
| Mailbox | Generic / unmatched (mx*.*) | 1 | 0.6% |
| ESP | SendGrid (Twilio) | 31 | 18.0% |
| ESP | HubSpot | 23 | 13.4% |
| ESP | Amazon SES | 19 | 11.0% |
| ESP | Salesforce | 18 | 10.5% |
Sophos Email (US) most commonly appears in configurations where the broader Sophos Email platform is also deployed, indicating organisations treat Sophos as an integrated solution for email management. This pattern is most prevalent among .com domains and smaller business deployments, reflecting reliance on bundled email infrastructure within Sophos's product suite. When auditing email infrastructure or evaluating sender reputation, recognising Sophos Email as a cohesive ecosystem rather than isolated components aids in accurately mapping organisational email architecture.
See the full Sophos Email (US) data page (KPI cards, trend, sample domains) →
Sophos Email (US) is an email service provider operated by Sophos that handles mail routing and delivery for organisations. It appears in infrastructure because organisations use it to send email, which is authorised via SPF records.
172 domains in the Tranco top-1M use Sophos Email (US) as their email service provider (ESP) as of July 13, 2026 (0.03% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
Sophos Email (US) accounts for 0.03% 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.
Sophos Email (US)'s largest TLD is .com (52.9% of its domains); it appears across 27 TLDs in total.