End-to-End Authentication Test
Paste a raw email to simulate how receiving servers (like Gmail or Microsoft 365) process it. We extract the DKIM signature, perform a live DNS lookup, and validate the complete chain of trust required to pass DMARC.
DKIM Tools
Process your raw emails through a real-world authentication pipeline. We dynamically extract the DKIM signature from your .EML source, perform live DNS fetching, and strictly validate the complete chain of trust required to pass DMARC alignment in real-time.
Paste a raw email to simulate how receiving servers (like Gmail or Microsoft 365) process it. We extract the DKIM signature, perform a live DNS lookup, and validate the complete chain of trust required to pass DMARC.
Our DKIM Authentication Tester acts exactly like an incoming mail server, processing your raw email source through the official authentication pipeline.
DKIM-Signature header injected by your mail server.d=) and selector (s=) from the email, eliminating the need for you to know them beforehand.From: address from the raw email and compares it against the DKIM signing domain to ensure strict/relaxed alignment.Your feedback has been submitted successfully. We appreciate your help in improving our tools.