About TMPEMAIL
Free, enterprise-grade email security diagnostics — accessible to everyone.
Our Mission
TMPEMAIL was built with a simple goal: make email security analysis accessible, accurate, and free for everyone. Whether you are a solo developer, a small business owner, or managing infrastructure for a large organization, you deserve clear visibility into your domain's email security posture.
We analyze over a dozen critical security protocols and configurations in seconds, providing actionable insights that would otherwise require multiple tools and deep technical expertise.
What We Check
Email Authentication
SPF, DKIM, and DMARC — the core trio that protects your domain from spoofing and phishing attacks.
Brand Indicators (BIMI)
Verify your BIMI configuration so your brand logo appears in recipient inboxes.
Transport Security
MTA-STS, TLS-RPT, STARTTLS — ensuring your emails are encrypted in transit.
HTTP & Infrastructure
HSTS, HTTPS redirects, HTTP/2, HTTP/3, reverse DNS, and blocklist monitoring.
Why Free?
We believe security tools should not be gated behind expensive subscriptions. TMPEMAIL is supported by ads and community donations. If you find our tools useful, consider buying us a coffee.
Part of a Larger Ecosystem
TMPEMAIL is part of a suite of free network and security tools that includes DNS Lookup, SSL Certificate Checker, WHOIS Lookup, Uptime Monitoring, and more. We are constantly improving and adding new features based on community feedback.