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Open .eml files

.eml is the standard file format for a single email. Many mail programs open it, but not every computer has one set up – and on a Chromebook or a shared PC you may not want to. Letterlark shows .eml files with their formatting, headers and attachments.

Open Letterlark – free viewer

Steps

  1. Open Letterlark.
  2. Drop one or more .eml files onto the page.
  3. Click a message to read it. Use Headers to see the full technical headers, for example to check where a message came from.
  4. Download attachments, or select several messages and use Export → All attachments to get them in one .zip.

Safe viewing

Scripts, forms, remote images and external links in the email are disabled. That makes Letterlark a calm way to look at a suspicious message: nothing in it can load content or report back that you opened it.

Questions and answers

Can I convert EML to PDF?

Yes. Select the messages and choose Export → PDF; your browser’s print dialog opens, where you choose “Save as PDF”.

Can I combine many EML files into one MBOX?

Yes. Open them all, click Select all results and choose Export → MBOX.

Last updated: 2026-10-26