mailcow.email 51 D
🛡️ SEO 58 🤖 GEO 77 ⚡ Perf 80 🏗️ Arch 80

mailcow.email — Global SEODiff Score 51/100

mailcow.email
📊

mailcow.email registers just 15/100 on the ACRI scale — a bottom-tier result indicating systemic AI visibility problems. Compared to other developer sites (avg score: 57), mailcow.email is trailing the benchmark, indicating room for competitive improvement. Content is delivered server-side, meaning bots and AI agents can parse the full page without executing JavaScript. A 6.3× bloat ratio is typical for sites in this tech tier — not wasteful, but streamlining could further boost extractability. Minimal structured data (1 block) limits the site's ability to communicate entity relationships to AI systems. All major AI crawlers (GPTBot, ClaudeBot, CCBot, Google-Extended) are restricted by robots.txt — the site has limited accessibility to AI search.

51
D — Global SEODiff Score
Comprehensive search visibility assessment
Below average — Traditional SEO (58) has the most room for improvement.
🎯 Top Fix: Allow GPTBot + ClaudeBot in robots.txt → lift the score cap
🔬 Automated SEODiff Assessment · Snapshot: Mar 18, 2026 · 📋 API
📈 ACRI Trend 3 snapshots
Mar 10 Mar 18
🔔 Recent AI Indexing Activity
📉 Mar 16 ACRI -1 (52→51)
📈 Mar 10 ACRI +1 (51→52)
Does your site score higher than mailcow.email?
Run the same 40-signal audit on your own domain — free, instant results.
Scan Your Site Free →
🧮 Score Transparency — How is this calculated?
🛡️ Traditional SEO (25% weight)58 × 0.25 = 14.5
🤖 AI Readiness / GEO (40% weight)77 × 0.40 = 30.8
⚡ Performance (20% weight)80 × 0.20 = 16.0
🏗️ Architecture & Trust (15% weight)80 × 0.15 = 12.0
Weighted sum = 14.5 + 30.8 + 16.0 + 12.0
⚠️ Fatal multiplier: All major AI bots blocked → ×0.5
Global SEODiff Score = 51 (D)
🚫
Gatekeeper Rule: Score cannot exceed 15. Both GPTBot and ClaudeBot are blocked in robots.txt. No major AI assistant can cite this site. Allow at least one major AI crawler to lift the cap. See Bot Access →
📊 ACRI Sub-Scores (AI Readiness Detail)
20
Bot Access
avg 92
100
Rendering
avg 93
50
Structure
avg 35
2
Schema
avg 9
90
Tech Stack
avg 63
🔀
Visibility Delta: Google vs AI
Google (Tranco)
Top 8%
Rank #81482
+59 pts
Gap
AI (ACRI)
Top 67%
Score 15/100

mailcow.email punches above its weight in AI — AI visibility exceeds Google ranking. This is a competitive moat worth protecting. ACRI measures technical crawler readiness. Read the methodology →

Why mailcow.email ranks here

Tech stackHugo
Industrydeveloper
RenderingSSR
Schema coverage1 blocks
Token bloat6.3×

Fastest improvements

  • Allow GPTBot in robots.txt so AI crawlers can access your pages (see Crawl Access).
  • Allow ClaudeBot (many assistants rely on it) — blocking it often correlates with “AI invisibility.”
  • Reduce token bloat (navigation/footer/code) so agents reach your main content faster (see Token Bloat).
  • Create an llms.txt file so AI crawlers can discover your content structure without heavy crawling. Generate llms.txt →
  • Run a full entropy audit to find which DOM regions waste the most tokens. Run Entropy Audit →
🧪

JavaScript Rendering Check

We check what AI crawlers miss when they skip JavaScript execution.

Running headless browser to simulate AI extraction…
🛡️

Traditional SEO

58/100 25 % of Global Score 🟢 High Confidence

📝 Title Tag

26 chars
Too short

Optimal range: 30–60 characters for SERP display.

📋 Meta Description

79 chars
Too short

Optimal range: 120–160 characters for snippet control.

🔤 Heading Hierarchy

  • ✓ Exactly 1 <h1> tag — found 1
  • ✓ Has <h2> headings — found 10
  • ✓ <h2> not before <h1>

🔍 Indexability

  • ✓ Canonical tag present → https://mailcow.email/
  • ✓ No noindex directive
  • ✓ Meta viewport set
  • ✓ HTML lang attribute → en
  • ➖ Hreflang tags — N/A (single language site)
  • ✓ Googlebot allowed by robots.txt

🌐 Social / OpenGraph

  • ✓ og:title — mailcow: dockerized - Blog
  • ✓ og:description — The mailserver suite with the 'moo' – 🐮 + 🐋 = 💕 | Official Blog Page
  • ✓ og:image — preview
  • ✓ twitter:card — summary_large_image
📐 How the SEO Pillar score is calculated

SEO Pillar = Title (20 pts) + Meta Desc (20 pts) + Heading Hierarchy (20 pts) + Indexability (20 pts) + Social/OG (20 pts)

Each sub-score is derived from the checks above. Canonical tag, lang attribute, og:image, and a single H1 are the highest-impact items.

🤖

AI Readiness / GEO

77/100 40 % of Global Score 🟢 High Confidence

This pillar aggregates citation share, hallucination risk, bot access, schema health, and content extractability. The individual diagnostic sections below contribute to this score.

🔗

Citation Alternatives

Research
💡
Insight: In the developer sector, hikkoshizamurai.jp (ACRI: 88) currently has stronger AI extractability. AI models tend to prefer sources with higher semantic structure and schema coverage. Domains with ACRI < 40 see 3.5× more hallucinations. Read the research →
mailcow.email
51
Your ACRI Score
88
Industry Peer ACRI
AI models prioritize pages with strong semantic structure and schema coverage. hikkoshizamurai.jp has schema coverage of 5 blocks and uses Custom / Proprietary. Improve your score by implementing the remediation patches below.
📊 Side-by-Side Comparison →
🚨

Hallucination Risk

Research

Is AI lying about your brand? This panel measures how likely LLMs are to hallucinate facts when extracting information from your page.

Analyzing hallucination risk…

🤖 Bot Access Matrix

GPTBot (OpenAI)
Blocked
ClaudeBot (Anthropic)
Blocked
CCBot (Common Crawl)
Blocked
Google-Extended
Blocked
Googlebot
Allowed
💡GPTBot is blocked. To appear in ChatGPT citations, add Allow: / under User-agent: GPTBot in your robots.txt.
💡ClaudeBot is blocked. To be cited by Claude, allow ClaudeBot in robots.txt.

👻 Rendering (Ghost Ratio) Docs

Ghost Ratio 0%
0% — Safe 50% 100% — Risk
Status Server-Side Rendered (Safe)
Rendering Type SSR

📊 Structure & Information Density Docs

Structure Grade 50/100 — Fair
Structured Elements 78 elements (77 lists, 1 rows, 0 headers)
Total Words1019
Raw Density7.7%

🏷️ Schema Health Docs

Organization Schema ❌ Missing
Product / Service Schema ⚠️ Not Found
Total Schema Blocks1 block(s) — Basic (low value for AI)

Schema Coverage Map

1/7 schema types detected
❌ Organization
❌ Product/Service
❌ Breadcrumb
❌ FAQ
❌ Article
✅ WebSite
💡Organization schema missing. AI models cannot identify your brand entity. Without it, your brand won't appear in Knowledge Panels or be associated with your content.
💡Product / Service schema missing. AI models don't know this is a SaaS product. Add Product or SoftwareApplication schema so AI understands what you offer and can surface pricing/features.
💡BreadcrumbList schema missing. AI cannot understand your site hierarchy or how pages relate to each other.
💡FAQ schema missing. Adding FAQPage schema lets AI models directly extract Q&A pairs for Featured Snippets and chatbot answers.

📐 AI Efficiency Metrics Docs

56
AI Extractability
Low
Crawl Cost
Critical
Blocklist Risk
Extractability56/100 — AI models can partially extract answers from this page
Crawl CostLow (10/100) — efficient for AI crawlers to process
Blocklist RiskCritical — 4 of 5 AI crawlers blocked

Token Bloat Research

15%
🗑️ 85%
Useful Content (7.3 KB)Bloat (38.8 KB)
Token Bloat Ratio6.3× — Normal

Multimodal Readiness

Visual Context100% Optimized for Vision
Image Alt Coverage6 / 6 images have alt text

TDM Rights

TDM-Reservation HeaderNot set
X-Robots-Tag: noaiNot set

🔥 Structural Entropy Check Research

0 Entropy
Poor Token Bloat: High
Noise Ratio: 84.1% · SNR: 0.19 · Signal: 1880 / Noise: 9924 tokens

🔬 AI-Crawler Simulation

See your website the way AI crawlers do. CSS stripped, structure labeled, content chunked.

🌐
This is what humans see — styled, branded, visual.
Toggle to "AI Agent View" to see what GPTBot, ClaudeBot, and other AI crawlers actually extract from this page.
🤖

AI Answer Preview

NEW

See how AI models summarize your site. Left: your actual content. Right: what the LLM extracts and says about you.

Simulating AI extraction…
🧠

The LLM Interpretation

AI-VERIFIED

SEODiff AI analyzed the extracted content of mailcow.email and produced this structured business intelligence. Fields marked SEMANTIC VOID indicate information the AI could not find — a critical gap in your site’s machine-readability.

Core Offering
Mailcow provides a Dockerized mail server solution, currently focusing on ARM64 integration for improved spam detection and Rspamd performance.
Target Audience
System administrators, DevOps engineers, and developers managing mail infrastructure, particularly those interested in ARM64 server deployments.
Pricing Model
Unknown - Likely a subscription-based model with potential tiers based on usage or features.
🔗 Integration Partners
DockerRspamdHyperscanDovecot
🏆 Competitive Moat
Focus on performance optimization through Hyperscan and a commitment to a stable, unified architecture across x86 and ARM64.
📊 Content Depth
6/10
🔄 Programmatic SEO Signals
FAQStatusBlog
⚡ Key Pain Points
• Hyperscan compilation issues on ARM64
• Console warnings impacting user experience
• Lack of native ARM64 support in Dovecot
• Potential inconsistencies due to separate repositories
Analyzed by SEODiff AI · 2026-03-04

🔧 Tech Stack

FrameworkHugo
AI-Readiness Score90/100
ServerGitHub.com
CDN
HTTP Status200
Load Time523 ms
Raw HTML Size46.1 KB
Visible Text Size7.3 KB

Performance & Speed

80/100 20 % of Global Score 🟢 High Confidence

⏱️ Time to First Byte

523 ms
Acceptable — room for improvement

Google considers <200 ms "good". AI crawlers may have even shorter timeouts.

📦 Page Weight

647
DOM nodes
46 KB
HTML payload
Lean page — fast for bots and users

🗄️ Cache & CDN

  • ✓ Cache-Control header → max-age=600
  • ✗ CDN cache status
  • ✗ CDN detected

🔬 Tracker Tax

0
tracker scripts
0
third-party domains
0.0%
token overhead
Minimal tracker load — clean signal for bots
📐 How the Performance Pillar score is calculated

Perf Pillar = TTFB (35 pts) + Page Weight (25 pts) + Cache/CDN (20 pts) + Tracker Tax (20 pts)

TTFB <200 ms = full marks. DOM >3000 or payload >300 KB incurs heavy penalties. Tracker scripts beyond 5 reduce score.

🏗️

Architecture & Trust

80/100 15 % of Global Score 🟢 High Confidence

🗺️ Sitemap & Robots

  • ✓ Sitemap declared in robots.txt → https://mailcow.email/sitemap.xml
  • ✓ Googlebot allowed
  • ✗ GPTBot allowed
  • ✗ ClaudeBot allowed

🔗 Linking

96
internal links
59
external links
Good internal linking — helps crawlers discover content

🔒 Security & Trust

  • ✗ HSTS header (Strict-Transport-Security)
  • ✗ Content-Security-Policy header
  • ✓ HTTP status 200 OK (got 200)

♿ Accessibility Signals

  • ✓ HTML lang attribute → en
  • ✓ Meta viewport for mobile
  • ✓ Single H1 for screen readers
📐 How the Architecture Pillar score is calculated

Arch Pillar = Sitemap & Robots (30 pts) + Linking (25 pts) + Security (25 pts) + Accessibility (20 pts)

Having a valid sitemap, allowing AI bots, HSTS, and a good internal link count are the highest-impact items.

🏅 AI-Verified Trust Badge

Your site scores 51/100. Reach 80+ to unlock the green "AI-Verified" badge. Fix the issues below to improve your score.

AI-Verified badge for mailcow.email
Pending Audit — score below 80 threshold
<a href="https://seodiff.io/radar/domains/mailcow.email" rel="noopener"><img src="https://seodiff.io/api/v1/badge?domain=mailcow.email" alt="AI-Verified by SEODiff" width="280" height="52"></a>

💡 Paste in your site footer, GitHub README, or email signature. Badge updates automatically as your score changes.

� Deep Crawl Analysis 56 pages · Deep-10

Homepage ACRI
51
Single-page score
+5
Consistent readability
Δ delta
Site-Wide ACRI
57
Avg across 56 pages · Range 0–85
Topical Cohesion
26%
Topical Drift
TF-IDF cosine similarity
Total Words
23257
Avg Bloat
15.2×
Page Type ACRI Token Bloat Words Status
https://mailcow.email/posts/2023/whats-up-arm64/
🤔🐮 What's Up? - ARM64 Integration - mailcow: dockerized - Blog
pricing 85 6.4× 725 💰 Pricing
https://mailcow.email/posts/2024/recap-2024/
🐮 Farewell 2024: Thanks to the Mailcow Community ❤️ - mailcow: dockerized - Blog
pricing 85 9.6× 507 💰 Pricing
https://mailcow.email/posts/2025/release-2025-01/
⚡🐄 Janmooary 2025 Update | the Update Which Changed the Full-Text Search (And Which Kicked Out Nextcloud) - mailcow: dockerized - Blog
other 85 6.4× 1116
https://mailcow.email/posts/2023/arm64-open-beta/
💪🐮6️⃣4️⃣ Mailcow: Dockerized (ARM64) Is Now in Open Beta (Inside Nightly Builds) - mailcow: dockerized - Blog
pricing 85 7.7× 586 💰 Pricing
https://mailcow.email/posts/2023/release-2023-10/
🎃🐄 Mooctober 2023 Update | Domainwide Footer, CURL Fixes and More - Revision A - mailcow: dockerized - Blog
other 85 8.5× 647
https://mailcow.email/posts/2023/arm64-delay/
💪🐮6️⃣4️⃣ Mailcow: Dockerized (ARM64) Development Stagnates. Will No Longer Release as Stable in 2023 - mailcow: dockerized - Blog
pricing 85 8.2× 571 💰 Pricing
https://mailcow.email/posts/2024/docker-25-ipv6-changes/
⚠️ Important Change When Using Mailcow With Deactivated IPv6 Connectivity ⚠️ - mailcow: dockerized - Blog
pricing 85 9.4× 527 💰 Pricing
https://mailcow.email/posts/2024/release-2024-06/
🌙🐄 Moone Update 2024 | Flatcurve Update Phase 1 - Revision C - mailcow: dockerized - Blog
pricing 85 6.9× 1234 💰 Pricing
https://mailcow.email/posts/2023/spamhaus-dnsblocklist/
🛑📜 Spamhaus DNS Blocklist Changes Since 2023-07 - mailcow: dockerized - Blog
other 85 7.1× 747
https://mailcow.email/posts/2024/release-2024-08/
🕶️🐄 Moogust Update 2024 | Forgot Password?, SOGo 5.11, Rspamd 3.9.1 and More | Revision A - mailcow: dockerized - Blog
other 85 8.9× 835
https://mailcow.email/posts/2023/release-2023-05/
🌷🐄 Mooai Update 2023 - IMAP Performance + General Tweaks Update - mailcow: dockerized - Blog
pricing 85 9.1× 705 💰 Pricing
https://mailcow.email/posts/2024/whats-up-ldap/
🤔🔒🐮 What's Up? - LDAP Integration - mailcow: dockerized - Blog
pricing 85 6.0× 943 💰 Pricing
https://mailcow.email/posts/2024/release-2024-01/
🦾6️⃣4️⃣ 🐄 Janmooary 2024 Update | the Multiarch (X86 + ARM64) & Performance Update - Revision E - mailcow: dockerized - Blog
pricing 85 5.8× 1221 💰 Pricing
https://mailcow.email/posts/2025/nightly-progress/
🌙🐄 LDAP/OIDC Status Update - We Didn’t Forget. We Were Just... Testing! - mailcow: dockerized - Blog
pricing 85 8.0× 919 💰 Pricing
https://mailcow.email/posts/2023/mailcow-idp/
🔒🔑 External Identity Providers for User Authentication - mailcow: dockerized - Blog
pricing 85 6.0× 1736 💰 Pricing
https://mailcow.email/posts/2024/release-2024-11/
🏮🐄 Moovember | Mailbox Rename, SOGo 5.11.1, Rspamd 3.10.2, and More | Revision B - mailcow: dockerized - Blog
other 75 11.2× 586
https://mailcow.email/posts/2025/release-2025-03/
💮🐮 Moorch 2025 Update | the Update Which Changed the Cow - mailcow: dockerized - Blog
pricing 75 13.8× 576 💰 Pricing
https://mailcow.email/posts/2025/release-2025-02/
🐥🐄 Febmooary 2025 Update | Rspamd and MariaDB Update - mailcow: dockerized - Blog
other 75 10.2× 555
https://mailcow.email/posts/2025/release-2025-09/
🍂🐄 Mootember Update 2025 | MTA-STS Support, SOGo 5.12.3, Rspamd 3.12.1, and More - Revision A - mailcow: dockerized - Blog
pricing 75 11.0× 904 💰 Pricing
https://mailcow.email/posts/2023/release-2023-07/
🍒 🐄 Mooly Update 2023 (A) - Manageable CORS Settings and UI Improvements - mailcow: dockerized - Blog
other 75 10.4× 573
Showing 20 of 56 pages. Unlock full subpage table →
📂
Health by Sub-Directory
Average ACRI and top issues aggregated by URL path prefix
Path Pages Avg ACRI Ghost % Bloat Top Issue
/posts/ 38 74 0% 11.8× High JS Bloat
/tags/ 2 37 0% 69.1× High JS Bloat
/categories/ 2 42 0% 51.4× High JS Bloat
/de/ 2 42 0% 66.8× High JS Bloat
/vps/ 1 65 0% 13.2× High JS Bloat
/blog/ 1 0 0% 0.0× Low AI Readiness
/about/ 1 0 0% 0.0× Low AI Readiness
/policy/ 1 65 0% 13.1× High JS Bloat
/pricing/ 1 0 0% 0.0× Low AI Readiness
/integrations/ 1 0 0% 0.0× Low AI Readiness
/products/ 1 0 0% 0.0× Low AI Readiness
/faq/ 1 0 0% 0.0× Low AI Readiness
/contact/ 1 0 0% 0.0× Low AI Readiness
/features/ 1 0 0% 0.0× Low AI Readiness
/docs/ 1 0 0% 0.0× Low AI Readiness
🔗
Outbound External Citations
0 unique external domains cited across 56 pages
demo.mailcow.email ×46
gohugo.io ×46
servercow.de ×46
nightly-demo.mailcow.email ×46
tinc.gmbh ×46
mailcow.github.io ×46
github.com ×46
docs.mailcow.email ×9
🔄 Re-Crawl & Update 📡 Track this Domain

Scores update automatically each month. Create a free account for on-demand re-crawls (3/month free).

🔌 API Access

Pull this data programmatically. All sub-page metrics are available via our public API.

curl https://seodiff.io/api/v1/deep10/domain/mailcow.email

Get your free API key — 100 requests/month included.

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Domains with a similar tech stack, industry, and AI readiness profile to mailcow.email. Compare side-by-side.

Domain ACRI AI Score Tech Stack Token Bloat Schema
mailcow.email (this site) 51 15 Hugo 6.3× 1
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📊 Semantic Share of Voice

How often would an AI cite mailcow.email when users ask about topics in this domain's niche? We run entity queries through our 188k-page search index and measure citation probability.

Analyzing citation landscape…

🩹

Remediation Patches

COPY-PASTE

Auto-generated code fixes tailored to mailcow.email. Copy and paste these into your codebase to improve AI visibility. These patches are mathematically proven to increase extraction accuracy →

Add Organization JSON-LD
High Impact ⏱ 5 min
AI models cannot identify your brand entity without Organization schema. This is the #1 fix for AI visibility.
html
<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "Organization",
  "name": "Email",
  "url": "https://mailcow.email",
  "logo": "https://mailcow.email/favicon.ico",
  "sameAs": []
}
</script>
Allow GPTBot in robots.txt
High Impact ⏱ 2 min
GPTBot is blocked — your content cannot appear in ChatGPT citations. Add this to your robots.txt:
text
User-agent: GPTBot
Allow: /

User-agent: ChatGPT-User
Allow: /
Allow ClaudeBot in robots.txt
Medium Impact ⏱ 2 min
ClaudeBot is restricted — Claude may not be able to cite your content. Many AI assistants rely on it.
text
User-agent: ClaudeBot
Allow: /

User-agent: anthropic-ai
Allow: /
Add FAQ Schema
Medium Impact ⏱ 10 min
FAQ schema lets AI models directly extract Q&A pairs. This is the easiest way to get featured in AI responses.
html
<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "FAQPage",
  "mainEntity": [
    {
      "@type": "Question",
      "name": "What is Email?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Add your answer here — describe what Email does in 1-2 sentences."
      }
    },
    {
      "@type": "Question",
      "name": "How does Email work?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Explain the key features and how users interact with Email."
      }
    }
  ]
}
</script>
📈

Projected Impact

ROI EST.

If you apply the patches above, here's the estimated improvement for mailcow.email:

Current Score
15
Projected Score
40
Improvement
+25 pts
Allow GPTBot +8 pts
Allow ClaudeBot +5 pts
Add Organization schema +6 pts
Reduce token bloat +3 pts
Add FAQ schema +3 pts

*Estimates based on SEODiff's scoring model. Actual results depend on implementation quality.

📋 Data Export

Download scores and metadata for audits, client reports, or CI/CD pipelines. Exports contain computed metrics only (no copyrighted content).

All data is generated automatically and updated with each crawl. JSON exports contain scores and metadata only (no copyrighted content).

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🧭 Self-Diffing (Private Layer)

For owned domains, combine this world snapshot with private drift + regression history.
Template Drift
Track in My Site
Drift → Traffic Impact
In development coming soon
Regression Incidents
Track in My Site
Internal Linking
Deep Audit graph
Semantic Structure
GEO view in Deep Audit
Content Quality
Thin/duplicate tracking

🕒 History

Score over timeAvailable in My Site history
Drift eventsTemplate timeline + incidents
Drift → Revenue AttributionComing soon
Schema/rendering/extractability changesTracked per scan in project history
🔍 Found indexing issues?
Run a free deep audit to diagnose crawled-not-indexed, soft 404s, redirect errors, and more.
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