.eml email file won't open or shows garbled attachments
Last reviewed 2026-09-19
An .eml file is an email in its original text form: headers, a blank line, then a body split into parts by a boundary string. If the blank line is missing, a header is folded wrongly or the boundary in the header does not match the one in the body, mail programs cannot find the parts and show an empty or garbled message.
Messages you might see
- “The file cannot be opened / message appears empty”
- “Attachments missing or shown as text”
- “Invalid message format”
Why it happens
- Line endings changed by an editor, or headers wrapped incorrectly.
- The boundary in the Content-Type header differs from the one used in the body.
- The closing boundary is missing because the file was cut off.
- MIME-Version or Content-Type headers missing.
Try this first (free, no tool needed)
- Open the file in a text editor to see whether the text of the message is there.
- Try opening it in a different mail client such as Thunderbird.
- Check how it was saved: dragging from a mail client sometimes produces a damaged copy.
If that didn't work
These tools run in your browser. Your file is read and repaired on your own device and is never uploaded.
Broken .eml Email Repair
Fixes line endings, folded headers, a missing blank line between headers and body, a MIME boundary that doesn't match the one used in the body, a missing closing boundary and a missing MIME-Version or Content-Type. The message content itself is never edited. It cannot restore attachment data that was never saved.
Open Broken .eml Email RepairCommon questions
Does it change what the email says?
No. Only the structure around the message is repaired.
Is my file uploaded anywhere?
No. The tool runs as a program inside your own browser, so the file is read and repaired on your device and never sent to a server.