According to Live Direct Marketing's daily Tranco top-1M scan (July 12, 2026), EmailSecurity.app gateway is the mailbox provider for 235 domains — 0.04% of 658,108 domains with MX records. Detection method: primary MX record (lowest preference).
EmailSecurity.app gateway is a mail gateway and mailbox provider handling inbound email for domains where it appears as the primary MX record. It operates as a receiving infrastructure layer for email delivery across the publicly indexed web.
Across the most-visited sites globally, EmailSecurity.app gateway's footprint concentrates in the long tail of smaller to mid-sized organisations rather than the largest brands, distributed internationally across many top-level domains with particular density in .com and a Global/US skew. For senders, this pattern means managing delivery to a meaningful yet fragmented recipient base; for receivers, it entails experiencing its filtering and queueing behaviour when exchanging mail with those smaller organisations.
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 0 | 0.0% |
| Top 10,000 | 0 | 0.0% |
| Top 100,000 | 17 | 7.2% |
| Top 1,000,000 | 182 | 77.4% |
| Unranked | 36 | 15.3% |
| TLD | Domains | Share | |
|---|---|---|---|
| .com | 100 | 42.6% | |
| .org | 29 | 12.3% | |
| .co.uk | 21 | 8.9% | |
| .gr | 9 | 3.8% | |
| .ie | 8 | 3.4% | |
| .ro | 8 | 3.4% | |
| .org.uk | 7 | 3.0% | |
| .it | 5 | 2.1% | |
| .hr | 3 | 1.3% | |
| .com.au | 3 | 1.3% |
Cross-tabulated from the same daily snapshot — the other email services seen on the same 235 domains.
| Type | Service | Domains | Share of EmailSecurity.app gateway users |
|---|---|---|---|
| ESP | LibraESVA | 152 | 64.7% |
| ESP | Mailchimp | 23 | 9.8% |
| ESP | SendGrid (Twilio) | 21 | 8.9% |
| ESP | Amazon SES | 19 | 8.1% |
| ESP | Mailgun | 18 | 7.7% |
| ESP | Mandrill | 15 | 6.4% |
| ESP | HubSpot | 13 | 5.5% |
| ESP | Salesforce | 12 | 5.1% |
| ESP | Zendesk | 11 | 4.7% |
| ESP | Campaign Monitor | 9 | 3.8% |
Because EmailSecurity.app gateway clusters among smaller and mid-sized sites rather than dominant global mailbox providers, senders rarely encounter standardised reputation guidance or publicly documented filter behaviour as they would for major ESPs. This long-tail placement justifies its inclusion in authentication and list-quality procedures where those recipients matter to the sender's business, but does not demand the same priority as testing against the largest providers when resources are constrained.
See the full EmailSecurity.app gateway data page (KPI cards, trend, sample domains) →
It handles mail for a distributed set of smaller and mid-sized organisations globally, warranting inclusion in testing if those organisations represent a material part of your recipient base; however, prioritise testing against the largest consumer and business mailbox providers first.
235 domains in the Tranco top-1M use EmailSecurity.app gateway as their mailbox provider as of July 12, 2026 (0.04% of domains with MX records), according to Live Direct Marketing's daily DNS scan.
EmailSecurity.app gateway accounts for 0.04% of domains with MX records 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.
EmailSecurity.app gateway's largest TLD is .com (42.6% of its domains); it appears across 43 TLDs in total.