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SpamCipher
Email Deliverability Intelligence Platform
Spam Cipher

See exactly where your emails land and why. Seed testing, content analysis, authentication monitoring, and AI classification in one place.

Free Spam Check
Trusted by email teams at
Products

Everything you need to reach the inbox

Four layers of analysis covering every angle spam filters use to judge your email.

Inbox Insight

Know exactly where your emails land

Send a test email to our seed addresses and see real-time placement across Gmail, Outlook, Yahoo, iCloud, and 15+ providers. No guessing, no assumptions.

Real-time inbox vs. spam placement
15+ email providers monitored
Historical trend tracking
Try Inbox Test
Gmail INBOX Outlook INBOX Yahoo PROMO 9.2 SCORE
Content Analysis

60+ rules scan every element of your email

Subject lines, body text, links, image-to-text ratio, and HTML structure are all checked against the same rules that spam filters use. Get a pass/warn/fail for each.

Subject line spam word detection
HTML structure validation
Image-to-text ratio checker
Analyze Content
Subject line clean 0 spam words HTML structure valid W3C compliant ! Image ratio high 62% (target <50%) Links verified 3 links, 0 blacklisted
Authentication

SPF, DKIM, and DMARC validated instantly

Validates your email authentication stack and flags missing records, weak keys, alignment issues, and misconfigurations before they hurt your sender reputation.

SPF, DKIM, DMARC alignment
Weak key detection (1024-bit warnings)
DNS record configuration check
Check Auth
SPF DKIM DMARC v=spf1 aligned 2048-bit key
AI Classifier

Machine learning predicts filter outcomes

Our model is trained on millions of spam/ham decisions across major providers. It predicts where your email will land with 98% accuracy, before you send to a single real subscriber.

98% prediction accuracy
Provider-specific models
Confidence scoring per prediction
Try AI Analysis
SPF TXT HDR INBOX 98% Confidence: High
How It Works

Three steps to better deliverability

No setup required. Get your first placement report in under 60 seconds.

1

Send a test email

Send to our unique test address from your ESP or email client. We handle the rest.

2

View placement results

See inbox, spam, or promotions placement per provider. Full breakdown in real time.

3

Fix and monitor

Get actionable fixes with priority ranking and set up continuous monitoring alerts.

Live Dashboard

See where your emails land

Real-time inbox placement data across every major email provider.

app.spamcipher.com/reports/campaign-1247
Placement Report — Campaign #1247
May 25, 2026 · 4 providers tested · 18 rules evaluated
9.2
Score
📧
Gmail
Inbox
📨
Outlook
Promotions
✉️
Yahoo
Inbox
☁️
iCloud
Inbox
SPF record valid and aligned PASS
DKIM signature verified (2048-bit key) PASS
DMARC policy set to reject PASS
Image-to-text ratio slightly high (62%) WARN
No blacklisted URLs detected PASS
AI classifier: inbox confidence 96.4% PASS
Free Tools

Deliverability tools, free forever

Professional-grade tools to diagnose and fix email deliverability issues. No account required.

Spam Score Checker

Paste your email HTML and get an instant deliverability score against 60+ spam filter rules.

Check now →
Coming Soon

Blacklist Checker

Check your domain and IP against 30+ DNS-based blacklists. Instant results, no signup required.

Check now →
Coming Soon

DMARC Generator

Create properly formatted DMARC DNS records with the right policy, reporting, and alignment settings.

Generate →
Coming Soon

SPF Flattener

Optimize your SPF record by flattening includes and staying under the 10-lookup limit.

Flatten →
Pricing

Simple, transparent pricing

Start free. Upgrade when you need deeper analysis and higher limits.

Free
$0
Free forever
  • 5 scans per day
  • Content analysis
  • Basic spam score (0-10)
  • Rule-by-rule breakdown
Start Free
Starter Coming Soon
$29 /mo
For email marketers
  • 100 scans per day
  • Auth & infra checks
  • Inbox placement prediction
  • API access
  • Scan history (30 days)
Most Popular
Professional Coming Soon
$79 /mo
For teams & agencies
  • Unlimited scans
  • AI classifier analysis
  • Full 4-tier analysis
  • API access + webhooks
  • Scan history (1 year)
  • Priority support
Agency Coming Soon
$199 /mo
For high-volume senders
  • Unlimited everything
  • White-label reports
  • Bulk scan API
  • Team seats (10)
  • Dedicated support
  • Custom rules
For Developers

Integrate deliverability into your workflow

RESTful API with predictable responses, rate limiting, and webhook callbacks. Scan emails programmatically and embed results in your CI/CD pipeline or marketing automation.

<200ms
Avg. response time
99.9%
Uptime SLA
60+
Spam rules
Get API Key
JavaScript
// Scan an email for deliverability issues
const response = await fetch('https://api.spamcipher.com/v1/scan', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer sc_live_...',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    html: emailHtml,
    subject: 'Welcome to Acme',
    from: '[email protected]'
  })
});

const { score, rules, placement } = await response.json();
// score: 9.2, rules: [{...}], placement: {...}

Ready to land in the inbox?

Join thousands of email teams using SpamCipher to improve their deliverability.

No credit card required · Free forever · 5 scans per day