Email Authentication Tools
Inspect your DMARC, DKIM, and SPF records in seconds. Identify misconfigurations and strengthen your domain against spoofing.
Starts with the DMARC check. Every result links to the other checks.
DMARC Inspector
Check your DMARC record to verify your domain tells receiving servers how to handle unauthenticated email. Spot misconfigurations and close security gaps before attackers exploit them.
Inspect NowDKIM Inspector
Validate your DKIM record to confirm outgoing messages carry a valid cryptographic signature. Ensure receivers trust your emails and detect alterations in transit.
Inspect NowSPF Inspector
Inspect your SPF record to confirm which mail servers are authorized to send on behalf of your domain. Follows every include and counts DNS lookups against the limit of 10.
Inspect NowBIMI Checker
Check your BIMI record, preview the logo it points to, and see whether your DMARC policy meets the BIMI requirement.
Inspect NowDMARC Record Generator
Build a valid DMARC record from a few choices. Copy the host name and value straight into your DNS.
Inspect NowDMARC Report Analyzer
Open DMARC aggregate reports (.xml, .gz or .zip) and see every sending source and its pass rate. Files never leave your browser.
Inspect NowWhy Use DMARC+ Tools?
Clear Findings
Each inspector reads your live DNS records in seconds and lists errors, missing entries, and policy conflicts so you know what to fix.
User-Friendly Interface
Enter your domain and get results immediately. No setup steps, no accounts required, no technical jargon standing between you and clear answers.
Better Email Security
Correct DMARC, DKIM, and SPF records let receivers block mail that spoofs your domain, which protects your brand and your recipients.
Advanced DNS Checking
Go beyond a simple pass or fail. The inspectors parse your DNS entries, flag syntax errors, and explain the impact of each configuration choice.
Secure your domain today
Run the inspectors above for free, then start your trial to monitor and enforce email authentication across every domain you own.