mailcow.email
mailcow: dockerized - Blog
Last scanned Jul 26, 2026, 11:49 AM
Overall score
Great
Summary
The mailserver suite with the 'moo' – 🐮 + 🐋 = 💕 | Official Blog Page. SEO is excellent (90/100) and accessibility is excellent (100/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: robots.txt not found.
The mailserver suite with the 'moo' – 🐮 + 🐋 = 💕 | Official Blog Page
Top issues to fix
7 issues found · 2 high priority
Missing Strict-Transport-Security header
SecurityAdd HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing X-Content-Type-Options header
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing X-Frame-Options header
SecurityAdd X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
robots.txt not found
SEOPublish /robots.txt with a Sitemap: directive to guide crawlers.
sitemap.xml not found
SEOPublish an XML sitemap and reference it from robots.txt to speed up page discovery.
+1 more issue — details in the sections below.
SEO
2 issue(s) found
Performance
209 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Organization
Company details published in this site's own structured data.
The mailserver suite with the 'moo' – 🐮 + 🐋 = 💕 | Official Blog Page
Contact
Email, phone, and address published on this site's own pages.
Meta tags
- Title
- mailcow: dockerized - Blog
- Description
- The mailserver suite with the 'moo' – 🐮 + 🐋 = 💕 | Official Blog Page
- Canonical
- https://mailcow.email/
- Language
- en
- Charset
- utf-8
- Viewport
- width=device-width,initial-scale=1,maximum-scale=2
- Robots meta
- noodp
- Manifest
Technologies
Detected frameworks, languages, and tools.
No technologies detected.
Hosting & CDN
- Hosting provider
- —
- CDN provider
- Fastly
- IP address
- —
- ASN
- —
DNS records
| Type | Value |
|---|---|
| A | — |
| AAAA | — |
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Let's Encrypt
- Subject
- mailcow.email
- Valid from
- Jun 25, 2026
- Valid to
- Sep 23, 2026
- Days until expiry
- 56
- SAN domains
- mailcow.email
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 1 · H2 10 · H3 9
Links
38 internal · 47 external · 20 broken
Images
6 total · 0 missing alt
Scripts / Styles
7 scripts · 1 stylesheets
JS / CSS size
832 B · 0 B
Page size
41.9 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- robots.txt not found
- sitemap.xml not found
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://mailcow.email
- Final URL
- https://mailcow.email
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 209 ms
- HTML size
- 41.9 KB
- Redirect chain
- https://mailcow.email
See something wrong on this report? Request a correction
Frequently asked questions
- What technology does mailcow.email use?
- We did not detect any specific technologies for mailcow.email in the latest scan.
- Is mailcow.email secure (HTTPS)?
- Yes. mailcow.email uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 23, 2026.
- Who hosts mailcow.email?
- Hosting provider information for mailcow.email is not available yet.
- What is mailcow.email's SEO score?
- mailcow.email scored 90/100 for SEO in the latest analysis (excellent).
- What is mailcow.email's overall website score?
- mailcow.email has an overall SiteGraph score of 88/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card