MailerLite · Domain Security

Mailerlite Domain Security

Domain security

Domain security posture for MailerLite, probed live across 3 host(s) and 1 registrable domain(s). 2 host(s) serve HTTPS (up to TLSv1.3); 0 advertise HSTS. Email/DNS controls: DNSSEC absent, SPF present, DMARC present (p=reject).

Email MarketingAutomationNewslettersSubscribersCampaignsWebhookE-CommerceSegmentationTransactional EmailMCP

Transport & Host Security

www.mailerlite.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Sep 15 09:56:40 2026 GMT
developers.mailerlite.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Oct 28 11:46:24 2026 GMT
classic.developers.mailerlite.com
HTTPS: no · HSTS: no

Domain (DNS/Email) Security

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

Source

Domain Security

Raw ↑ 
generated: '2026-08-13'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
hosts:
- host: www.mailerlite.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 15 09:56:40 2026 GMT
  hsts: null
- host: developers.mailerlite.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Oct 28 11:46:24 2026 GMT
  hsts: false
- host: classic.developers.mailerlite.com
  https: false
domains:
- domain: mailerlite.com
  dnssec: false
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: reject