SecureMailGate email service provider (ESP)

According to Live Direct Marketing's daily Tranco top-1M scan (July 12, 2026), SecureMailGate is the email service provider (ESP) for 187 domains — 0.03% of 617,244 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.

Key facts

SecureMailGate is an email infrastructure provider whose presence is detected through SPF authentication records across the web. It serves as a mail handling and routing platform for websites that integrate it as part of their email infrastructure.

Analysis of its deployment footprint reveals it operates primarily within a smaller, regional segment of the web rather than among the largest global brands. SecureMailGate shows strong concentration in the German-language (.de) domain space and is frequently deployed alongside Hostpoint, a Swiss hosting provider, suggesting it functions as part of integrated mail and hosting bundles in the German-speaking region. For email professionals, this pattern indicates SecureMailGate is most relevant when managing deliverability to or from smaller European sites, particularly those in the German market or using regional hosting ecosystems.

Where SecureMailGate sits in the Tranco ranking

Tranco rank bandDomainsShare of its base
Top 1,00000.0%
Top 10,00021.1%
Top 100,000179.1%
Top 1,000,00012466.3%
Unranked4423.5%

Top-level domain split

TLDDomainsShare
.de9249.2%
.com3920.9%
.at115.9%
.net94.8%
.org94.8%
.fi21.1%
.online21.1%
.ch21.1%
.eu21.1%
.one21.1%

What SecureMailGate users also use

Cross-tabulated from the same daily snapshot — the other email services seen on the same 187 domains.

TypeServiceDomainsShare of SecureMailGate users
MailboxHostpoint (CH)10556.1%
MailboxSelf-Hosted2714.4%
MailboxMicrosoft 3652111.2%
MailboxUnknown / Other94.8%
MailboxGoogle Workspace63.2%
MailboxGeneric / unmatched (mail.*)42.1%
ESPZendesk2010.7%
ESPBrevo (ex-Sendinblue)115.9%
ESPMailchimp94.8%
ESPMailgun84.3%

SPF Authentication and Regional Infrastructure Coupling

SecureMailGate's consistent co-occurrence with Hostpoint in SPF records reflects a common pattern among regional hosting providers: bundling email infrastructure, DNS, and web hosting into integrated packages for the German-speaking market. This tight coupling can influence how global mailbox providers classify and score mail from these domains. Because SecureMailGate sits outside the mainstream ESP landscape, mail originating from its infrastructure may encounter different reputation thresholds, filtering logic, or rate-limiting policies compared to mail from larger, globally-distributed platforms.

See the full SecureMailGate data page (KPI cards, trend, sample domains) →

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Frequently asked questions

What is SecureMailGate and does it affect email deliverability?

SecureMailGate is a regional email infrastructure provider, primarily concentrated in the German market and often bundled with Swiss hosting services; because it sits outside the mainstream ESP landscape, mail authenticated through it may encounter different reputation scoring by major mailbox providers.

How many domains use SecureMailGate?

187 domains in the Tranco top-1M use SecureMailGate as their email service provider (ESP) as of July 12, 2026 (0.03% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.

Is SecureMailGate common enough to affect email deliverability testing?

SecureMailGate 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.

Which countries or TLDs use SecureMailGate most?

SecureMailGate's largest TLD is .de (49.2% of its domains); it appears across 27 TLDs in total.

Other email service provider (ESP)s

Amazon SES (6.21%)SendGrid (Twilio) (4.75%)Mailgun (4.11%)Zendesk (3.87%)Mailchimp (3.69%)Mandrill (3.36%)HubSpot (3.18%)Salesforce (2.62%)Mailjet (Sinch) (2.13%)Cloudflare Email Routing (1.80%)