Lume Free Email Tools
Free SPF/DKIM checker, blacklist scanner & header analyzer
Lume Free Email Tools launched on March 14, 2026.
What it does
Free email tools: Domain Health Checker (SPF/DKIM/DMARC), Email Blacklist Checker (25+ DNSBLs), and Email Header Analyzer. No signup required.
Three powerful tools to diagnose, fix, and monitor your email deliverability. Used by founders, developers, and email marketers. Built by Lume . Embed any Lume tool on your blog, documentation, or website — completely free. Each embed includes a "Powered by Lume" link. No API key, no signup, no JavaScript dependencies. How it works: The embed loads directly from lumesend.com — always up to date. The "Powered by Lume" link below it gives us a backlink and gives your readers a link to the full tool. Win-win. Lume manages your entire email stack — SPF/DKIM/DMARC, reputation monitoring, blacklist alerts, and high-throughput sending. Fromfrom lumesend.com
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