EML inspector

Read email headers without rendering the message.

Open an EML file or paste its source to inspect routing, authentication headers, attachment markers, and a limited plain-text preview entirely on your device.

Choose or drop an EML fileUp to 5 MB; the file remains in this browser tab.

Raw message source

Header summary

Authentication results

Safe body preview

Authentication headers need context

SPF, DKIM, and DMARC results are usually added by receiving mail infrastructure. A pasted header can be altered, so treat these fields as evidence to interpret alongside the trusted delivery path—not as automatic proof of identity.