Microsoft retired Publisher in October 2026, and Microsoft 365 no longer opens .pub files. Microsoft's notice

Convert MBOX to PDF

Turn a whole mailbox into a PDF archive: every e-mail, every attachment and an index. See the first 20 e-mails free.

or drop it here. .mbox up to 2 GB, Outlook .pst up to 4 GB. Free preview of the first 20 e-mails, no account needed.

What is in your archive

Price

Checking your mailbox and the first 20 e-mails are free. The full archive is one payment: $14.99 for up to 1,000 e-mails, $39.00 for up to 20,000. No subscription.

How to convert an MBOX file to PDF

Choose the .mbox file above. We count the e-mails and show you the first 20 as PDF, free. If they look right, pay once and we build the archive: a PDF for every e-mail, one PDF per year, the attachments and an index. Then download it as one ZIP.

What is an .mbox file?

MBOX is the most common format for a whole mailbox: all e-mails of a folder in one file. Google Takeout exports Gmail as .mbox, Apple Mail exports mailboxes as .mbox, and Thunderbird keeps its folders in this format. One .mbox can hold tens of thousands of e-mails, which is why it needs a tool to read.

Who needs a mailbox as PDF

Lawyers and courts, HR departments, accountants and anyone answering a data access request ask for e-mails as PDF. People also keep a readable copy before they close an old account, or of a loved one's mail. Desktop programs for this cost $29 to $49 and run only on Windows; FileOpens works in any browser. Only one e-mail? Use EML to PDF, free.

More E-mail tools

Also on FileOpens

Questions about mailbox to PDF

How much does it cost?

Checking the mailbox and the PDF of the first 20 e-mails are free. The full archive is a one-time $14.99 for up to 1,000 e-mails, or $39.00 for up to 20,000. Larger mailboxes: write to support@fileopens.com.

How big can the mailbox be?

Up to 2 GB for an .mbox and 4 GB for an Outlook .pst. It uploads in parts, so a slow or patchy connection is fine; keep the page open until the upload finishes.

How long does it take?

Counting the e-mails and the free preview take a few minutes. The full archive takes about a minute per few hundred e-mails; you can close the page and come back to the same link.

What is in the ZIP?

A PDF for every e-mail, numbered from the oldest, one PDF per year with all of its e-mails, the attachments in a folder next to each e-mail, and an index (Index.csv for Excel and Index.html) with date, sender, recipients and subject.

Is my mail safe?

The mailbox is used only to make your archive. Nothing in it runs, nothing is loaded from the internet, and everything is deleted automatically 24 hours after the archive is ready. Nobody reads it.

I have Apple Mail or Thunderbird, not Gmail

Apple Mail: Mailbox > Export Mailbox gives a folder ending in .mbox; upload the file called "mbox" inside it. Thunderbird: the ImportExportTools NG add-on exports a folder as .mbox, or upload the mail file from your profile folder (for example "Inbox", with no extension).

Do you convert Outlook .pst files?

Yes. Upload the .pst on PST to PDF; the index shows which Outlook folder each e-mail came from. An .ost file (Outlook's offline copy) cannot be read on its own: export a .pst from Outlook first. A single message (.msg) is free: MSG to PDF.