postmarkapp.com
Postmark: Fast, Reliable Email Delivery Service | SMTP | API
Last scanned Jul 26, 2026, 4:25 AM · 1 view
Overall score
Excellent
Summary
Send transactional and marketing emails and get them to the inbox on time, every time. This website uses Google Analytics hosted on Cloudflare behind Cloudflare CDN. SEO is excellent (100/100) and accessibility is excellent (100/100). Security scores good (80/100) and performance excellent (100/100).
Postmark
Send transactional and marketing emails and get them to the inbox on time, every time. Postmark is a fast and reliable email delivery service for developers.
- United Kingdom
- Hosted on Cloudflare
Products & pricing
Product and pricing information published in this site's own structured data.
Simple pricing that scales with your business
$0.00 USD
Top issues to fix
3 issues found · 1 high priority
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing X-Frame-Options header
SecurityAdd X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
4 broken links on the page
SEOFix or remove broken links — they waste crawl budget and erode user trust.
SEO
0 issue(s) found
Performance
622 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Organization
Company details published in this site's own structured data.
Postmark
Send transactional and marketing emails and get them to the inbox on time, every time. Postmark is a fast and reliable email delivery service for developers.
Contact
Email, phone, and address published on this site's own pages.
Meta tags
- Title
- Postmark: Fast, Reliable Email Delivery Service | SMTP | API
- Description
- Send transactional and marketing emails and get them to the inbox on time, every time. Postmark is a fast and reliable email delivery service for developers.
- Canonical
- https://postmarkapp.com/
- Language
- en
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- Cloudflare
- CDN provider
- Cloudflare
- IP address
- 94.247.142.1
- ASN
- AS209242 (CLOUDFLARESPECTRUM - Cloudflare London, LLC, US)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA | — |
| MX |
|
| TXT | — |
| NS |
|
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Google Trust Services
- Subject
- postmarkapp.com
- Valid from
- Jun 25, 2026
- Valid to
- Sep 23, 2026
- Days until expiry
- 59
- SAN domains
- postmarkapp.com
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsEnabled
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 1 · H2 12 · H3 1
Links
61 internal · 23 external · 4 broken
Images
22 total · 1 missing alt
Scripts / Styles
4 scripts · 2 stylesheets
JS / CSS size
553 B · 42 B
Page size
89.0 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 0
- sitemap.xml
- Found
- URLs in sitemap
- 950
SEO issues
No SEO issues detected.
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://postmarkapp.com
- Final URL
- https://postmarkapp.com
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 621 ms
- HTML size
- 89.0 KB
- Redirect chain
- https://postmarkapp.com
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does postmarkapp.com use?
- postmarkapp.com is built with Google Analytics.
- Is postmarkapp.com secure (HTTPS)?
- Yes. postmarkapp.com uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Sep 23, 2026.
- Who hosts postmarkapp.com?
- postmarkapp.com is hosted on Cloudflare, behind Cloudflare CDN.
- What is postmarkapp.com's SEO score?
- postmarkapp.com scored 100/100 for SEO in the latest analysis (excellent).
- What is postmarkapp.com's overall website score?
- postmarkapp.com has an overall SiteGraph score of 95/100, combining SEO, performance, security, and accessibility.
- What company operates postmarkapp.com?
- postmarkapp.com is operated by Postmark. Send transactional and marketing emails and get them to the inbox on time, every time. Postmark is a fast and reliable email delivery service for developers.
- What products does postmarkapp.com offer?
- postmarkapp.com offers Simple pricing that scales with your business.
OpenGraph & Twitter Card
OpenGraph
Twitter Card