Email header reader
Trace any email's journey. Paste the raw headers below to check its authentication (SPF, DKIM and DMARC), follow every server hop and spot delivery delays. It all happens in your browser, so your data never leaves your device.
Where do I find email headers? (Gmail, Outlook, Apple Mail and more)
- Gmail: open the email, click the three dots, then Show original.
- Outlook: open the email, click the three dots, then View and View message details.
- Apple Mail: View, Message, then All Headers.
- Proton Mail: the three dots, then View headers.
- Fastmail: the three dots, then Show raw message.
Spotted something suspicious or want a second opinion? Get in touch. Before you send me headers, take out any personal email addresses or private IP addresses.