sparkmailapp.com 78 B
🛡️ SEO 67 🤖 GEO 83 ⚡ Perf 74 🏗️ Arch 85

sparkmailapp.com — Global SEODiff Score 78/100

sparkmailapp.com
📊

At 76/100, the ACRI for sparkmailapp.com indicates strong fundamentals in AI extractability, surpassing the majority of indexed sites. Within the infrastructure vertical, this places sparkmailapp.com above the industry average of 57 —, suggesting strong competitive positioning in AI search. Server-side rendering keeps the ghost ratio near zero, giving AI systems direct access to all visible content. The token bloat ratio sits at a lean 2.7×, meaning the ratio of code to visible content is efficient — crawlers spend their token budget on actual information. Only 1 schema block is present — adding Organization, WebSite, and Breadcrumb schemas would significantly improve structured data coverage. All major AI bot user-agents (GPTBot, ClaudeBot, CCBot, Google-Extended) are permitted by robots.txt, ensuring broad AI crawler access.

78
B — Global SEODiff Score
Comprehensive search visibility assessment
Strong foundations, but Traditional SEO (67) is your bottleneck.
🎯 Top Fix: Monitor weekly to catch regressions early
🔬 Automated SEODiff Assessment · Snapshot: Mar 21, 2026 · 📋 API
📈 ACRI Trend 7 snapshots
Feb 23 Mar 21
🔔 Recent AI Indexing Activity
No recent changes detected by adaptive crawler.
Does your site score higher than sparkmailapp.com?
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)67 × 0.25 = 16.8
🤖 AI Readiness / GEO (40% weight)83 × 0.40 = 33.2
⚡ Performance (20% weight)74 × 0.20 = 14.8
🏗️ Architecture & Trust (15% weight)85 × 0.15 = 12.8
Weighted sum = 16.8 + 33.2 + 14.8 + 12.8
Global SEODiff Score = 78 (B)
📊 ACRI Sub-Scores (AI Readiness Detail)
100
Bot Access
avg 92
99
Rendering
avg 93
51
Structure
avg 35
42
Schema
avg 9
50
Tech Stack
avg 63
🔀
Visibility Delta: Google vs AI
Google (Tranco)
Top 8%
Rank #80516
+9 pts
Gap
AI (ACRI)
Top 17%
Score 76/100

sparkmailapp.com shows stronger AI visibility than traditional SEO ranking. Great AI foundation to build on. ACRI measures technical crawler readiness. Read the methodology →

Why sparkmailapp.com ranks here

Tech stackCustom / Proprietary
RenderingSSR
Schema coverage1 blocks
Token bloat2.7×

Fastest improvements

  • You’re already in decent shape — the next moat is monitoring drift over time.
  • 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

67/100 25 % of Global Score 🟢 High Confidence

📝 Title Tag

37 chars
Good length

Optimal range: 30–60 characters for SERP display.

📋 Meta Description

110 chars
Too short

Optimal range: 120–160 characters for snippet control.

🔤 Heading Hierarchy

  • ✓ Exactly 1 <h1> tag — found 1
  • ✓ Has <h2> headings — found 12
  • ✓ <h2> not before <h1>

🔍 Indexability

  • ✓ Canonical tag present → https://sparkmailapp.com
  • ✓ No noindex directive
  • ✓ Meta viewport set
  • ✓ HTML lang attribute → en
  • ✅ Hreflang tags
  • ✓ Googlebot allowed by robots.txt

🌐 Social / OpenGraph

  • ✓ og:title — Spark Mail — Smart. Focused. Email.
  • ✓ og:description — Spark helps you take your inbox under control. Instantly see what’s important and quickly clean up the rest.
  • ✓ og:image — preview
  • ✗ twitter:card
📐 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

83/100 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 infrastructure sector, safely.co.jp (ACRI: 90) 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 →
sparkmailapp.com
63
Your ACRI Score
90
Industry Peer ACRI
AI models prioritize pages with strong semantic structure and schema coverage. safely.co.jp has schema coverage of 3 blocks and uses WordPress. 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)
Allowed
ClaudeBot (Anthropic)
Allowed
CCBot (Common Crawl)
Allowed
Google-Extended
Allowed
Googlebot
Allowed

👻 Rendering (Ghost Ratio) Docs

Ghost Ratio 5%
0% — Safe 50% 100% — Risk
Status Server-Side Rendered (Safe)
Rendering Type SSR

📊 Structure & Information Density Docs

Structure Grade 51/100 — Fair
Structured Elements 68 elements (68 lists, 0 rows, 0 headers)
Total Words872
Raw Density7.8%

🏷️ Schema Health Docs

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

Schema Coverage Map

2/7 schema types detected
✅ Organization
❌ Product/Service
❌ Breadcrumb
❌ FAQ
❌ Article
✅ WebSite
💡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

71
AI Extractability
Low
Crawl Cost
None
Blocklist Risk
Extractability71/100 — AI models can easily extract answers from this page
Crawl CostLow (30/100) — efficient for AI crawlers to process
Blocklist RiskNone — 0 of 5 AI crawlers blocked

Token Bloat Research

37%
🗑️ 63%
Useful Content (26.3 KB)Bloat (43.5 KB)
Token Bloat Ratio2.7× — Lean

Multimodal Readiness

Visual Context55% Optimized for Vision
Image Alt Coverage6 / 11 images have alt text

TDM Rights

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

🔥 Structural Entropy Check Research

57 Entropy
Fair Token Bloat: Medium
Noise Ratio: 62.4% · SNR: 0.60 · Signal: 6720 / Noise: 11133 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 sparkmailapp.com 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
Spark is a focused email client designed to help users manage their communication and productivity.
Target Audience
Productivity app users, email users, Apple device users
Pricing Model
⚠ SEMANTIC VOID
🏆 Competitive Moat
Focus on productivity and a philosophy of communication organization.
📊 Content Depth
5/10
Analyzed by SEODiff AI · 2026-03-04

🔧 Tech Stack

AI-Readiness Score50/100
Servernginx
CDN
HTTP Status200
Load Time841 ms
Raw HTML Size69.7 KB
Visible Text Size26.3 KB

Performance & Speed

74/100 20 % of Global Score 🟢 High Confidence

⏱️ Time to First Byte

841 ms
Slow — bots may time out or deprioritise

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

📦 Page Weight

597
DOM nodes
70 KB
HTML payload
Lean page — fast for bots and users

🗄️ Cache & CDN

  • ✓ Cache-Control header → no-store, no-cache, must-revalidate
  • ✗ CDN cache status
  • ✗ CDN detected

🔬 Tracker Tax

1
tracker scripts
1
third-party domains
0.0%
token overhead
Minimal tracker load — clean signal for bots
amplitude.com
📐 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

85/100 15 % of Global Score 🟢 High Confidence

🗺️ Sitemap & Robots

  • ✓ Sitemap declared in robots.txt → https://sparkmailapp.com/sitemap.xml
  • ✓ Googlebot allowed
  • ✓ GPTBot allowed
  • ✓ ClaudeBot allowed

🔗 Linking

91
internal links
12
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 63/100. Reach 80+ to unlock the green "AI-Verified" badge. Fix the issues below to improve your score.

AI-Verified badge for sparkmailapp.com
Pending Audit — score below 80 threshold
<a href="https://seodiff.io/radar/domains/sparkmailapp.com" rel="noopener"><img src="https://seodiff.io/api/v1/badge?domain=sparkmailapp.com" 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 51 pages · Deep-10

Homepage ACRI
63
Single-page score
-3
Consistent readability
Δ delta
Site-Wide ACRI
60
Avg across 51 pages · Range 0–85
Topical Cohesion
15%
Topical Drift
TF-IDF cosine similarity
Total Words
34406
Avg Bloat
23.1×
Page Type ACRI Token Bloat Words Status
https://sparkmailapp.com/de/blog/essential-features-good-email-app-must-have
8 Funktionen, die eine gute E-Mail-App haben muss | Spark Blog
pricing 85 6.9× 1734 💰 Pricing
https://sparkmailapp.com/de/blog/7-reasons-why-agencies-need-spark-for-teams
7 Gründe, warum Agenturen Spark für Teams brauchen | Spark E-Mail
pricing 85 7.2× 1589 💰 Pricing
https://sparkmailapp.com/de/blog/spark-ai-email-assistant
So funktioniert Spark +AI als persönlicher E-Mail-Assistent
pricing 85 6.5× 1682 💰 Pricing
https://sparkmailapp.com/de/blog/spark-vs-superhuman
Spark oder Superhuman: was ist 2025 die beste Wahl?
pricing 85 6.0× 1993 💰 Pricing
https://sparkmailapp.com/de/blog/how-to-write-professional-email
Professionelle E-Mails | Tipps & Beispiele
pricing 85 7.9× 1363 💰 Pricing
https://sparkmailapp.com/de/blog/expanding-beyond-email
Spark kann mehr als E-Mails: Kalender und Meetingnotizen
pricing 75 15.5× 625 💰 Pricing
https://sparkmailapp.com/de/blog/email-making-you-blue
Warum E-Mails manchmal schlechte Laune machen und was Sie dagegen tun können
pricing 75 10.9× 849 💰 Pricing
https://sparkmailapp.com/de/blog/developing-better-email-habits
Bessere Gewohnheiten rund um E-Mails mit Spark
pricing 75 10.6× 983 💰 Pricing
https://sparkmailapp.com/de/blog/create-professional-email-address-format-examples
So erstellen Sie eine professionelle E-Mail-Adresse
pricing 75 12.3× 832 💰 Pricing
https://sparkmailapp.com/de/blog/spark-android-13-customization
Mehr Personalisierung im Spark-Update für Android 13
pricing 75 14.7× 671 💰 Pricing
https://sparkmailapp.com/de/blog/back-to-school-master-inbox
Back to School: Inbox aufräumen und gut starten
pricing 75 15.1× 631 💰 Pricing
https://sparkmailapp.com/de/blog/inbox-zero-day
Der 6. Oktober ist Inbox Zero Day!
pricing 75 18.3× 501 💰 Pricing
https://sparkmailapp.com/de/blog/shared-drafts-and-delegations
Geteilte Entwürfe und Zuweisungen – Spark für Teams
pricing 75 18.1× 522 💰 Pricing
https://sparkmailapp.com/de/blog/achieve-inbox-zero
Mehr Kontrolle über Ihre E-Mails und endlich Inbox Zero mit Spark
pricing 75 14.0× 687 💰 Pricing
https://sparkmailapp.com/de/blog/spark-ios18-updates
Spark ist bereit für iOS 18
pricing 75 13.8× 710 💰 Pricing
https://sparkmailapp.com/de/blog/introducing-spark-ai
Spark +AI: Ihr persönlicher E-Mail-Assistent
pricing 75 13.4× 716 💰 Pricing
https://sparkmailapp.com/de/blog/email-cc-bcc-meaning
Was bedeutet CC und BCC? | Wie verwendet man es per E-Mail?
pricing 75 10.9× 921 💰 Pricing
https://sparkmailapp.com/de/blog/integrations-for-desktop
Integrationen für den Desktop: Ihre Lieblings-Apps verbinden
pricing 75 18.1× 527 💰 Pricing
https://sparkmailapp.com/de/blog/ios-updates-widgets-stage-manager
iOS-Updates & Spark: Sperrbildschirm-Widgets & Stage Manager
pricing 75 17.6× 570 💰 Pricing
https://sparkmailapp.com/uk/pricing
Ціноутворення в Spark
pricing 72 40.9× 1201 💰 Pricing
Showing 20 of 51 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
/de/ 34 70 0% 18.1× High JS Bloat
/contact/ 1 0 0% 0.0× Low AI Readiness
/pricing/ 1 69 0% 37.3× High JS Bloat
/zh/ 1 59 0% 101.5× High JS Bloat
/case-studies/ 1 0 0% 0.0× Low AI Readiness
/features/ 1 62 0% 26.7× High JS Bloat
/blog/ 1 49 0% 33.1× High JS Bloat
/docs/ 1 0 0% 0.0× Low AI Readiness
/products/ 1 0 0% 0.0× Low AI Readiness
/integrations/ 1 0 0% 0.0× Low AI Readiness
/fr/ 1 69 0% 33.7× High JS Bloat
/faq/ 1 0 0% 0.0× Low AI Readiness
/it/ 1 69 0% 35.3× High JS Bloat
/about/ 1 49 0% 40.8× High JS Bloat
/uk/ 1 72 0% 40.9× High JS Bloat
🔗
Outbound External Citations
0 unique external domains cited across 51 pages
linkedin.com ×45
facebook.com ×45
instagram.com ×45
drive.google.com ×45
readdle.com ×45
x.com ×45
youtube.com ×45
twitter.com ×33
🔄 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/sparkmailapp.com

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

🔗 Similar infrastructure Sites

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

Domain ACRI AI Score Tech Stack Token Bloat Schema
sparkmailapp.com (this site) 63 76 Custom / Proprietary 2.7× 1
kondela.hu 86 93 Custom / Proprietary 3.1× 4 Compare →
pubsandclubs.com.au 86 87 Custom / Proprietary 4.9× 4 Compare →
insuranceyet.com 86 87 Custom / Proprietary 4.9× 4 Compare →
melbourneschool.com 86 87 Custom / Proprietary 5.0× 4 Compare →
kruizinga.nl 87 93 Custom / Proprietary 3.0× 5 Compare →
Compare All 5 Similar Sites →

📊 Semantic Share of Voice

How often would an AI cite sparkmailapp.com 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 sparkmailapp.com. Copy and paste these into your codebase to improve AI visibility. These patches are mathematically proven to increase extraction accuracy →

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 Sparkmailapp?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Add your answer here — describe what Sparkmailapp does in 1-2 sentences."
      }
    },
    {
      "@type": "Question",
      "name": "How does Sparkmailapp work?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Explain the key features and how users interact with Sparkmailapp."
      }
    }
  ]
}
</script>
📈

Projected Impact

ROI EST.

If you apply the patches above, here's the estimated improvement for sparkmailapp.com:

Current Score
76
Projected Score
79
Improvement
+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).

Is this your company?

Monitor your AI visibility score weekly and get alerted when changes happen.

Start Free →

🧭 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.
Free Deep Audit → GSC Error Guide →