According to Live Direct Marketing's daily Tranco top-1M scan (July 13, 2026), Sophos Email (EU) is the email service provider (ESP) for 421 domains — 0.07% of 617,702 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
Sophos Email (EU) is a cloud-hosted email security service operated by Sophos, providing filtering, scanning, and compliance to organisations across Europe and internationally. It typically appears in the infrastructure of smaller and mid-market websites rather than concentrated among the world's largest brands.
Because Sophos Email (EU) sits mostly in the long tail of distributed domains, email senders and receivers engaging with it must understand it as a distinct deliverability variable with its own authentication, filtering, and reputation patterns. Organisations sending mail to or through Sophos Email (EU) should account for these infrastructure-specific factors when troubleshooting delivery issues.
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 0 | 0.0% |
| Top 10,000 | 2 | 0.5% |
| Top 100,000 | 30 | 7.1% |
| Top 1,000,000 | 351 | 83.4% |
| Unranked | 38 | 9.0% |
| TLD | Domains | Share | |
|---|---|---|---|
| .com | 138 | 32.8% | |
| .de | 107 | 25.4% | |
| .it | 23 | 5.5% | |
| .gov.uk | 22 | 5.2% | |
| .org | 20 | 4.8% | |
| .co.uk | 16 | 3.8% | |
| .net | 9 | 2.1% | |
| .eu | 7 | 1.7% | |
| .fr | 6 | 1.4% | |
| .at | 6 | 1.4% |
Cross-tabulated from the same daily snapshot — the other email services seen on the same 421 domains.
| Type | Service | Domains | Share of Sophos Email (EU) users |
|---|---|---|---|
| Mailbox | Sophos Email | 296 | 70.3% |
| Mailbox | Microsoft 365 | 105 | 24.9% |
| Mailbox | Self-Hosted | 5 | 1.2% |
| Mailbox | Unknown / Other | 5 | 1.2% |
| Mailbox | Google Workspace | 3 | 0.7% |
| Mailbox | Trend Micro | 2 | 0.5% |
| ESP | Amazon SES | 42 | 10.0% |
| ESP | Constant Contact | 33 | 7.8% |
| ESP | SendGrid (Twilio) | 30 | 7.1% |
| ESP | Zendesk | 29 | 6.9% |
Sophos Email (EU) operates as a cloud-hosted multi-tenant service, which means many organisations' mail flows through the same IP addresses and reputation pools. Organisations using Sophos Email (EU) — or receiving mail from them — must account for this shared infrastructure: a poor sender elsewhere on the platform can temporarily degrade deliverability for unrelated legitimate senders, and vice versa. This underscores the importance of implementing strong DKIM and DMARC policies regardless of the ESP hosting the mail.
See the full Sophos Email (EU) data page (KPI cards, trend, sample domains) →
Sophos Email (EU) is a cloud-hosted email security service used by organisations across Europe and internationally; it should be considered when troubleshooting mail delivery to businesses that use it. Because it is primarily deployed by smaller and mid-market organisations rather than massive global brands, it is typically a secondary deliverability variable in most sender reputation strategies.
421 domains in the Tranco top-1M use Sophos Email (EU) as their email service provider (ESP) as of July 13, 2026 (0.07% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
Sophos Email (EU) accounts for 0.07% 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 (EU)'s largest TLD is .com (32.8% of its domains); it appears across 51 TLDs in total.