Free Tools

SendLucid offers a set of free, no-login checkers for diagnosing email setup one record at a time. They’re the same checks that power the full deliverability score — handy when you want to verify a single thing fast.

• SPF Checker — validate your SPF record and sending sources.
• DKIM Checker — verify your DKIM signature key.
• DMARC Checker — check your DMARC policy and reporting.
• BIMI Inspector — confirm your BIMI logo record.
• Blacklist Checker — see if an IP or domain is blacklisted.
• MX Lookup — list a domain’s mail servers.
• Header Analyzer — decode raw email headers.

For a complete picture — authentication, reputation, content, and infrastructure scored together — run the full deliverability test.