The email deliverability intelligence platform that tells you exactly where your emails land and why. Seed testing, content analysis, and authentication monitoring 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 exactly where it lands across Gmail, Outlook, Yahoo, and 15+ providers.
Learn more →60+ content rules check your subject lines, body text, links, image-to-text ratio, and HTML structure for spam triggers.
Learn more →Validates SPF, DKIM, and DMARC alignment. Flags missing records, weak keys, and configuration issues before they hurt delivery.
Learn more →Machine-learned model trained on millions of spam/ham decisions predicts filter outcomes with 98% accuracy.
Learn more →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.
"We were landing in Gmail promotions for months and couldn't figure out why. SpamCipher pinpointed the exact content triggers in under 10 seconds. Inbox rate went from 62% to 94%."
"The DMARC and SPF validation alone saved us from a major deliverability crisis. Found a misconfigured DKIM key that had been silently failing for weeks."
"We run 200+ campaigns a month for clients. SpamCipher replaced three separate tools in our stack. The seed testing across providers is a game changer for agency work."