How to get raw headers
Gmail
- Open the email
- Click the ⋮ (3-dot menu) top right
- Click Show original
- Click Copy to clipboard
Outlook (Desktop)
- Open the email
- Click File → Properties
- Copy text from Internet headers box
Apple Mail
- Open the email
- Menu: View → Message
- Click All Headers
- Select all and copy
Outlook Web (OWA): Open email → Actions (⋯) → View message source |
Thunderbird: View → Message Source (Ctrl+U)
Paste the full raw headers from any email — nothing is sent to any server, analysis is 100% in-browser.