# Email Header Analyzer (MailboxInsights)

> Paste email headers and see SPF, DKIM, DMARC results and every delivery hop.

- Website: https://mailboxinsights.com/email-header-analyzer
- AZN8 listing: https://azn8.com/listing/email-header-analyzer-mailboxinsights
- Pricing: Free
- Categories: [Developer tools](https://azn8.com/category/developer-tools), [Productivity](https://azn8.com/category/productivity), [Security](https://azn8.com/category/security)
- Listed: 2026-10-28
- Updated: 2026-10-28
- JSON: https://azn8.com/api/v1/listings/email-header-analyzer-mailboxinsights

## About

A free email header analyzer. You paste the raw headers from any message and it shows SPF, DKIM and DMARC pass or fail, the full delivery path with the delay at each hop, and warnings such as Reply-To mismatches or failed alignment. The checks run in code, and AI only writes a plain-English explanation of the results. Nothing you paste is stored. Useful for phishing triage, deliverability troubleshooting and IT helpdesks.

## Features

- SPF, DKIM and DMARC pass or fail
- Full delivery path with delay at each hop
- Reply-To mismatch and alignment warnings
- No signup, nothing stored

[Visit website](https://mailboxinsights.com/email-header-analyzer)