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MBOX viewer

List every message in an mbox export — sender, date and subject — without a mail client.

10 / 10 free files today

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MBOX to EMLSplit an mbox export into one .eml file per message, ready to open individually.EML viewerOpen a saved email and read it — sender, date, subject and body — with no mail client.ICS viewerOpen a calendar invitation or export and read its events before importing anything.VCF viewerOpen a .vcf file and read the contacts it holds, without importing them anywhere.Excel viewerOpen and read an .xlsx, .xls, .ods or Numbers file without a spreadsheet program.Extract email attachmentsPull every attachment out of a saved .eml message and download them separately.EML to HTMLSave the HTML part of an email as a standalone page you can open in a browser.EML to textPull the readable text out of a saved email, decoding quoted-printable and base64 bodies.

MBOX viewer is free to use as often as you like, directly from this page. Its place is under Email; MBOX to EML and EML viewer answer the questions closest to this one.

How to use it

  1. Open the tool — no signup or install needed.
  2. Enter your input or adjust the available options.
  3. Get your result instantly, then copy or download it.

Frequently asked questions

What does MBOX viewer do?

List every message in an mbox export — sender, date and subject — without a mail client.

When would I actually use this?

Reading a message exported from a mailbox you no longer have open, pulling the attachments out of one, and turning an mbox export — one long file holding a whole folder — back into messages you can open one at a time.

What is the most common mistake?

Reading a raw header as if it were text. Any header may be encoded, so a subject with accents arrives as base64 and shows as gibberish taken literally. The matching trap is in the body: a line that happens to begin "From " is not a message boundary, and treating it as one cuts the message in half without changing the message count.

How is MBOX viewer different from MBOX to EML?

They sit next to each other but answer different questions: MBOX to EML is the one to open when you need it to split an mbox export into one .eml file per message, ready to open individually. Pick whichever matches what you're starting from — both are free.

Is there a tool for the next step?

EML viewer is the closest one after this: Open a saved email and read it — sender, date, subject and body — with no mail client.

Where do the figures come from?

Messages are parsed against the mail and MIME specifications, in the browser, so nothing is sent anywhere — which matters more for mail than for most files. The mbox separator is matched on its full shape, sender and date together, rather than on the two words it starts with.

Further reading

All guides →
ExplainerConverting Formulas to Values Keeps the Cached Answer, Not the CalculationA spreadsheet file stores both the formula and the last answer Excel computed. Stripping the formula leaves the stored answer — and leaves a blank wherever the file never carried one.ExplainerThe Number 1 and the Text "1" Are Not DuplicatesDeduplication compares whole rows exactly, cell type included. Five identical-looking rows came out as three, because one held a number, one a string and one a string with a leading space.ComparisonZIP or TAR: Which One, and Why It MattersOne structural difference explains everything else: TAR does not compress, it only stacks; ZIP compresses each file on its own. Measured on 60 small source files, that is the difference between 1,809 bytes and 14,686.ComparisonXLS, XLSX, XLSM and XLSB: Which Is Which, and Which You WantFour extensions, three of them the same box with different lids. Rename an XLSX to .zip and it opens — that single fact explains the whole family, and explains why XLS, which does not, is the one still causing trouble.How-toAdding Page Numbers to a PDF When the Pages Are Rotated or Mixed SizesNumbering a tidy document is trivial. The cases that bite are a page turned sideways, a Letter sheet among A4 ones, a print file with bleed, and a document that already prints its own number. All four were tested: on the first three the number lands exactly where you asked, and the fourth is not detected at all.GuideWhat a PDF Says About You: Reading and Clearing Its MetadataA PDF carries its metadata twice, in two stores that can tell different stories, and neither of them is the whole story. Here is what is actually in the file, what clearing it removes, and the two things that survive every wipe.