Check BIMI DNS records and parse logo and authority directives to validate brand indicator setup for email clients - free to use.
Create DMARC TXT records with rua/ruf reports, alignment modes, pct rollout, and reject or quarantine policies - free, browser-based.
Parse raw email headers to trace routing path, verify SPF and DKIM authentication, detect delays, and debug email delivery issues.
Create professional email signatures with name, role, contact details, social links, and copy-ready HTML - no account needed.
Validate email addresses instantly with format checking, domain verification, and common typo detection. Check single or bulk emails for deliverability.
Check if an IP address is listed on 15+ major DNSBL spam blacklists including Spamhaus, SpamCop, and Barracuda. Instantly audit email server reputation and identify deliverability issues.
Create mailto links with pre-filled recipients, subject, and body. Generate HTML email links for contact buttons and support pages.
Look up MX DNS records for any domain to see which mail servers handle incoming email and their priority - free, no signup needed.
Compress PDF files online to reduce file size for email and uploads. Adjust quality and scale settings, then download a smaller PDF copy.
Perform a reverse DNS PTR lookup for any IPv4 or IPv6 address to find its mapped hostname. Useful for server audits, email deliverability, and IP reputation checks.
Validate SPF DNS records for any domain and review include chains, mechanisms, and all-policy qualifiers to debug deliverability issues.
Generate SPF TXT records with ip4, ip6, A, MX, and include mechanisms. Choose hard or soft fail policy - no signup required.
Check TLS-RPT DNS records and inspect report destination URIs to monitor SMTP TLS delivery failures - free tool, no signup required.