Email & SMTP Tools
Comprehensive tools for email authentication, deliverability testing, header analysis, and SMTP diagnostics. Perfect for email administrators, marketers, and developers.
Email Header Analyzer
Parse and analyze email headers to trace message paths, identify mail servers, and extract authentication results. Decode Received headers, Message-IDs, and routing information for troubleshooting delivery issues.
Analyze HeadersDKIM Record Generator
Generate DKIM DNS records with custom selectors and key sizes. Create cryptographic signatures to authenticate your email and prevent spoofing. Includes instructions for key pair generation and mail server configuration.
Generate DKIMDKIM Validator
Validate DKIM signatures by checking DNS records for specific selectors. Verify that your DKIM implementation is correct and that public keys are properly published. Essential for email authentication troubleshooting.
Validate DKIMEmail Deliverability Tester
Comprehensive test for email sending capability. Checks SPF, DKIM, DMARC, and MX records in one scan. Identify configuration issues that may cause emails to be rejected or marked as spam.
Test DeliverabilityBIMI Record Generator
Generate Brand Indicators for Message Identification (BIMI) records to display your logo in email clients. Requires DMARC enforcement and SVG logo format. Enhance brand visibility and trust in email communications.
Generate BIMIMTA-STS Generator
Create MTA-STS policy files and DNS records to enforce TLS encryption for email delivery. Protect against man-in-the-middle attacks and ensure secure mail transport between servers.
Generate MTA-STSEmail Blacklist Lookup
Check if your IP address is listed on major email blacklists including Spamhaus, SpamCop, SORBS, Barracuda, and more. Essential for maintaining good sender reputation and email deliverability.
Check BlacklistsSPF Record Generator
Build SPF records interactively with support for ip4, ip6, mx, a, and include mechanisms. Configure authorized mail servers and set enforcement policies. Prevent email spoofing and improve deliverability.
Generate SPFSMTP Tester
Test SMTP server connectivity on common ports (25, 465, 587). Verify that mail servers are accepting connections and responding correctly. Useful for diagnosing mail delivery problems and server configuration.
Test SMTPEmail Syntax Validator
Validate email addresses against RFC 5322 standards. Check format, length limits, MX records, and detect common typos in popular email domains. Ensure your mailing lists contain valid addresses.
Validate Email