PowerMTA.in resource
Free Email Header Analyzer
Practical note: Technical information should be validated against your mail provider, DNS configuration and current standards before production changes.
Paste the raw headers from an email. The analysis happens in your browser; the page does not need to upload the header to a server.
What it can identify
- Authentication-Results lines
- SPF, DKIM and DMARC status when present in the header
- ARC status when present
- From, Return-Path and Message-ID fields
- Received header chain
A header analyzer is a diagnostic aid, not a guarantee of inbox placement or sender reputation.