Inbox · Domain Security

Inbox Domain Security

Domain security

Domain security posture for Inbox, probed live across 2 host(s) and 2 registrable domain(s). 2 host(s) serve HTTPS (up to TLSv1.3); 2 advertise HSTS. Email/DNS controls: DNSSEC absent, SPF present, DMARC present (p=reject).

EmailInboxMessagingDeliverabilityTransactional Email

Transport & Host Security

www.mailgun.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Aug 25 07:03:07 2026 GMT
www.nylas.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Sep 4 01:33:30 2026 GMT

Domain (DNS/Email) Security

mailgun.com
DNSSEC: no · SPF: yes · DMARC: yes (p=reject) · CAA: none
nylas.com
DNSSEC: yes · SPF: yes · DMARC: yes (p=quarantine) · CAA: none

Source

Domain Security

inbox-domain-security.yml Raw ↑ 
generated: '2026-07-11'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
hosts:
- host: www.mailgun.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Aug 25 07:03:07 2026 GMT
  hsts: true
  hsts_max_age: 63072000
- host: www.nylas.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep  4 01:33:30 2026 GMT
  hsts: true
  hsts_max_age: 15552000
domains:
- domain: mailgun.com
  dnssec: false
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: reject
- domain: nylas.com
  dnssec: true
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: quarantine