indexo.dev

smtp.com

.com crawl dns

First seen 2026-04-14 · Last seen 2026-05-15 · ok HTTP/1.1 200 2912 ms crawled 2026-05-08

CA · 3.97.161.32 · AS16509 Amazon.com, Inc.

Reputation 100/100

Classifying

HTML metadata

Title
SMTP Email Delivery & Transactional Email API | SMTP.com
Description
Boost inbox delivery with SMTP’s trusted email relay and API. Scalable, secure, and backed by 20+ years of expertise. Start sending emails today!
Language
en-US
Generator
WordPress 6.9.4
Canonical
https://www.smtp.com/
Feeds

Open Graph

url
https://www.smtp.com/
title
SMTP Email Delivery & Transactional Email API | SMTP.com
locale
en_US
site name
SMTP.com
description
Boost inbox delivery with SMTP’s trusted email relay and API. Scalable, secure, and backed by 20+ years of expertise. Start sending emails today!

Technology

CDN
Cloudflare
CMS
WordPress
Analytics
  • Google Tag Manager

Third-party hosts loaded (5)

  • cdn.ziffstatic.com×2
  • cdnjs.cloudflare.com×1
  • dev.visualwebsiteoptimizer.com×1
  • gmpg.org×1
  • www.googletagmanager.com×1

Social

Contact

Phone

Registration

Registrar
CSC Corporate Domains, Inc.
Created
1996-01-13
Expires
2029-08-20 1188 days left
Updated
2021-09-10
Name servers
  • ns-1304.awsdns-35.org
  • ns-1999.awsdns-57.co.uk
  • ns-5.awsdns-00.com
  • ns-735.awsdns-27.net

DNS records live

NS
  • ns-1304.awsdns-35.org
  • ns-1999.awsdns-57.co.uk
  • ns-5.awsdns-00.com
  • ns-735.awsdns-27.net
MX
  • 1 aspmx.l.google.com
  • 10 alt3.aspmx.l.google.com
  • 10 alt4.aspmx.l.google.com
  • 5 alt1.aspmx.l.google.com
  • 5 alt2.aspmx.l.google.com
TXT
Show 11 TXT records
  • workplace-domain-verification=1C1x1SPucfNn1Fr3TGnq5S4CkW6d2K
  • yahoo-verification-key=Utle3fUFirQWcjoayIFnRNI9Ze5xeLkJVHGiM4SDDOQ=
  • adobe-idp-site-verification=cd8dab640ab786a9457c8757f4188cd682dd687a694d1d9c251e9ef54140a0ec
  • anthropic-domain-verification-a7dhhv=HKS33lCsBblqIuk9izpBfsrUP
  • atlassian-domain-verification=QUsZX4LdPWTYZgx09JhShFot27EJnUl/5CyxXFsiGebXl2QD8Fh3zzfkYZJe42Ic
  • ca3-45a37e403e924bf79c5654db77de6e40
  • docusign=e502a075-c396-4062-9cf3-04d746be78d4
  • google-site-verification=ro696-ZtDw4t7zojvY0Bn6J_vHGC8cspSNr87MvQK2I
  • google-site-verification=yx_3sNZXSJJmoeSRx-2KgKtY3QigPtgnlNxJHMfyhxo
  • pendo-domain-verification=503f668d-eeb7-4984-af1f-356cb1abc443
  • stripe-verification=51BEF67C3B1EF40AC20D9413296F7414370646A39E58673F790CA9D173A95E93

Email authentication strong

SPF
v=spf1 include:_spf.smtp.com include:_spf.google.com include:_qaspf.smtp.com ~all
softfail (~all)
DMARC
v=DMARC1;p=reject;sp=quarantine;rua=mailto:dmarc-reports@smtp.com,mailto:088836b424@rua.easydmarc.us;adkim=s;aspf=r
policy: reject (enforced) · sp=quarantine
DKIM
  • google: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCRZndBwQvLkxmmW/j25LhXfatvwcGh6xMV4OtwRchFqPnYxK+EYy22ar4KlCSIc+Z1ad5Pu75ThQe9lxzVDW…
selectors probed

Certificate (current)

Sectigo Public Server Authentication CA OV R36
from 2025-10-29 to 2026-10-30
Expires in 163 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 55/100 Checked live page: https://www.smtp.com

present
  • x-frame-options
  • x-content-type-options
  • permissions-policy
findings
  • missing HSTS
  • missing Content Security Policy
  • missing Referrer Policy
Header values
x-frame-options
SAMEORIGIN
permissions-policy
private-state-token-redemption=(self "https://www.google.com" "https://www.gstatic.com" "https://recaptcha.net" "https://challenges.cloudflare.com" "https://hcaptcha.com"), private-state-token-issuance=(self "https://www.google.com" "https://www.gstatic.com" "https://recaptcha.net" "https://challenges.cloudflare.com" "https://hcaptcha.com")
x-content-type-options
nosniff

Links to (6)

Linked from (2)