See exactly where your emails land and why. Seed testing, content analysis, authentication monitoring, and AI classification in one place.
Four layers of analysis covering every angle spam filters use to judge your email.
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.
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.
Validates your email authentication stack and flags missing records, weak keys, alignment issues, and misconfigurations before they hurt your sender reputation.
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.
No setup required. Get your first placement report in under 60 seconds.
Send to our unique test address from your ESP or email client. We handle the rest.
See inbox, spam, or promotions placement per provider. Full breakdown in real time.
Get actionable fixes with priority ranking and set up continuous monitoring alerts.
Real-time inbox placement data across every major email provider.
Professional-grade tools to diagnose and fix email deliverability issues. No account required.
Paste your email HTML and get an instant deliverability score against 60+ spam filter rules.
Check now →Check your domain and IP against 30+ DNS-based blacklists. Instant results, no signup required.
Check now →Create properly formatted DMARC DNS records with the right policy, reporting, and alignment settings.
Generate →Optimize your SPF record by flattening includes and staying under the 10-lookup limit.
Flatten →Start free. Upgrade when you need deeper analysis and higher limits.
RESTful API with predictable responses, rate limiting, and webhook callbacks. Scan emails programmatically and embed results in your CI/CD pipeline or marketing automation.
// 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: 'hello@acme.com' }) }); const { score, rules, placement } = await response.json(); // score: 9.2, rules: [{...}], placement: {...}
Join thousands of email teams using SpamCipher to improve their deliverability.