Test your email configuration, validate DNS records, and get actionable insights to improve your email deliverability. No signup required.
Send a test email and get a comprehensive analysis of your email authentication, deliverability score, and actionable recommendations.
Comprehensive analysis of your domain's email authentication configuration with health score.
Analyze email headers to check SPF, DKIM, and DMARC authentication status.
Analyze domain configuration and get insights into domain reputation factors.
Instantly analyze any domain's email security configuration. Check SPF, DKIM, and DMARC records without sending an email.
Automatically configure SPF, DMARC, and DKIM records for Google Workspace, Microsoft 365, and more using Cloudflare DNS.
Check reverse DNS (PTR) records for any IP address. Verify proper configuration for email deliverability.
Look up MX records for any domain to see which mail servers are configured to receive email.
Check if a domain has BIMI configured for brand logo display in email clients.
Look up any DNS record type (A, AAAA, MX, TXT, CNAME, NS, SOA, SRV) for any domain.
Find all DKIM selectors configured for a domain. Checks 25+ common selector names.
Instantly check your current IP address and connection details.
Check DNS record propagation across multiple DNS servers globally.
Discover email-related subdomains and infrastructure for any domain.
Analyze MX record priorities, redundancy, and configuration for optimal email delivery.
Generate a valid SPF record for your domain. Includes validation, lookup counting, and DNS setup instructions.
Create a properly formatted DMARC record with all options. Perfect for setting up email authentication.
Check if your IP address or domain is listed on email blacklists. Monitor your reputation across 10+ major blacklists.
Check if a domain has MTA-STS configured for secure email transmission.
Verify if a domain has DNSSEC enabled to protect against DNS spoofing attacks.
Verify SSL/TLS certificates for email servers and webmail interfaces.
Analyze security HTTP headers for webmail interfaces and websites.
Find domains sharing the same IP addresses or nameservers that could affect your email reputation.
Check TLS configuration and cipher suites for email servers and webmail interfaces.
Get a complete email authentication report in 3 simple steps
We'll generate a unique test email address just for you.
Send any email from your email address to the test address.
View your detailed analysis with scores, issues, and recommendations.
Our email checker performs deep analysis of your email authentication and provides actionable insights.
Check if your SPF record authorizes your sending servers
Verify cryptographic signatures are valid and properly configured
Analyze your DMARC policy and alignment settings
Complete analysis of your domain's email-related DNS records