Diagnostic e-mail
Analyseur d'en-têtes d'e-mail
Paste raw email source to inspect SPF, DKIM, and DMARC authentication results, trace hop-by-hop delivery delays, and spot mismatched sender headers.
Ce que les en-têtes révèlent
Incoming emails include a block of headers above the message body where mail servers record authentication checks and routing timestamps. Mail clients hide these fields by default, so inspecting the raw headers is the fastest way to diagnose why a message landed in spam, arrived hours late, or failed sender verification.
Pasting the raw message source breaks that log into three views: whether the message passed sender authentication, where it spent time in transit, and how individual header fields were set.
Authentification
Shows the SPF, DKIM, and DMARC verdicts recorded by the receiving mailbox so you can confirm whether the sender domain passed verification.
Chemin de livraison
Lists the mail relays that handled the message in chronological order alongside the elapsed time at each hop to pinpoint transit delays.
Header breakdown
Unfolds headers such as From, Return-Path, and Message-ID into a searchable table so you can compare the visible sender against the return address.
Analyser un message
Copy the original message source from your mail client and paste it below. Header parsing runs locally in your browser without uploading message content.
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Poursuivez avec la documentation, les guides et les exemples sur ce sujet.