Email Header Analyzer (Google Admin)
online
Free
toolbox.googleapps.com/apps/messageheader/
United States
What it does
Analyzes email headers showing delivery delays, SPF/DKIM/DMARC results, and hop-by-hop routing with timestamps.
When to use it
- Gmail and Google Workspace analysis
- Diagnosing email delays
- Authentication verification
When not to use it
- Non-Google email systems
- Malware analysis
Limitations
- Header parsing only