According to Live Direct Marketing's daily Tranco top-1M scan (July 13, 2026), Hornetsecurity is the email service provider (ESP) for 1,612 domains — 0.26% of 617,702 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
Hornetsecurity is an email service provider serving smaller and mid-market organisations, predominantly in German-speaking regions. Its infrastructure is visible in the SPF records of domains using its platform, where it is listed as an authorised sender of mail.
Hornetsecurity's customer concentration sits in the long tail of smaller organisations rather than the largest global brands, with particularly strong presence in Germany and neighbouring markets. For deliverability teams and email administrators, Hornetsecurity is a regular fixture in the DACH region's email infrastructure, and understanding its role helps clarify authentication patterns and routing behaviour in those geographies.
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 3 | 0.2% |
| Top 10,000 | 8 | 0.5% |
| Top 100,000 | 158 | 9.8% |
| Top 1,000,000 | 1,273 | 79.0% |
| Unranked | 170 | 10.5% |
| TLD | Domains | Share | |
|---|---|---|---|
| .de | 641 | 39.8% | |
| .com | 423 | 26.2% | |
| .fr | 103 | 6.4% | |
| .net | 45 | 2.8% | |
| .at | 43 | 2.7% | |
| .co.uk | 36 | 2.2% | |
| .es | 35 | 2.2% | |
| .org | 33 | 2.0% | |
| .ch | 27 | 1.7% | |
| .ca | 16 | 1.0% |
Cross-tabulated from the same daily snapshot — the other email services seen on the same 1,612 domains.
| Type | Service | Domains | Share of Hornetsecurity users |
|---|---|---|---|
| Mailbox | Hornetsecurity | 1,086 | 67.4% |
| Mailbox | Microsoft 365 | 177 | 11.0% |
| Mailbox | Hornetsecurity (AntispamEurope) | 144 | 8.9% |
| Mailbox | Unknown / Other | 67 | 4.2% |
| Mailbox | Google Workspace | 33 | 2.0% |
| Mailbox | Self-Hosted | 29 | 1.8% |
| ESP | Mailjet (Sinch) | 153 | 9.5% |
| ESP | Amazon SES | 145 | 9.0% |
| ESP | Constant Contact | 100 | 6.2% |
| ESP | Brevo (ex-Sendinblue) | 97 | 6.0% |
Hornetsecurity authorises its mail servers via SPF records published by customer domains, making it visible to anyone inspecting DNS configuration in the DACH region. The concentration of this SPF footprint in German-speaking markets reflects Hornetsecurity's customer base distribution. For organisations troubleshooting delivery or analysing infrastructure in those regions, recognising Hornetsecurity's infrastructure helps explain authentication signatures and regional routing behaviour.
See the full Hornetsecurity data page (KPI cards, trend, sample domains) →
Hornetsecurity is an email service provider primarily serving smaller organisations in German-speaking markets; it appears in infrastructure via SPF records as an authorised sender, and is a common fixture in the DACH region's email ecosystem.
1,612 domains in the Tranco top-1M use Hornetsecurity as their email service provider (ESP) as of July 13, 2026 (0.26% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
Hornetsecurity accounts for 0.26% 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.
Hornetsecurity's largest TLD is .de (39.8% of its domains); it appears across 91 TLDs in total.