Corbett

OST to PDF Converter

Corbett OST to PDF Converter opens Outlook OST files on Windows and saves every email as a PDF, in bulk or for chosen folders only. Folders, attachments and dates stay intact, and Outlook does not need to be installed. Try free demo first.

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4.6 out of 5 from 683 reviews

Works offline on your PC. Corbett never sees your OST files or messages.

Free demo, scanned clean on VirusTotal and a 30-day money-back window.

Lifetime licence from $99 Demo converts 10 emails per folder

Quick answer

What Is a OST to PDF Converter?

An OST to PDF converter opens Outlook OST files and saves every email as a PDF. Corbett OST to PDF Converter does that offline on Windows, so your mail opens in any PDF viewer.

What it opens

Offline OST files, Orphaned OST files, Single OST files

What it saves

PDF first, plus PST, EML, MBOX, HTML

Who uses it

Outlook and Exchange users and admins moving or archiving mail

Conversion scope

OST to PDF Converter for Offline outlook mail on Windows

OST to PDF Converter Saves Every email as a PDF

An OST file is the local mailbox copy that Outlook keeps. PDF pages suit printing, filing and legal review. OST to PDF converter reads Outlook OST files on Windows and saves every email as a PDF, with your OST files left as they were.

Kept in output

Email body and headers
Attachments
Sender and receiver
Dates and subjects
Folder tree

OST input types

Offline OST files
Orphaned OST files
Single OST files
Folders of OST files

Outputs

PDF
PST
EML
MBOX
HTML
TXT
CSV
Gmail
Office 365
IMAP

Not needed

Outlook install
Internet connection
Mailbox password
Extra software

Outlook cannot print mail from a closed OST file

Microsoft overview of Outlook Data Files says you cannot import from an OST file, so mail in a closed or orphaned OST stays out of reach, and printing it one email at a time is slow. OST to PDF converter reads the OST on Windows and saves every email as a PDF, with your OST left as it was.

Save Outlook email as PDF

Related pages: OST Converter, PST Converter, OST to EML Converter, MBOX to PDF Converter and OLM to PDF Converter. Other mail files sit on email converter tool page.

Core features

OST to PDF Converter Features by Screen

Five screens of Corbett OST to PDF converter software, in conversion order.

OST to PDF converter email data files list

Source files

Add Your OST Files

Select Open, then Email Data Files, and add your OST files. OST to PDF converter loads your mail into its panel, and no Outlook is needed.

A spare PC with no Outlook still works. OST to PDF converter reads your files and leaves them as they were.

Batch loading

Choose Files or Choose Folders

Select Choose Files for one OST file or a few. Select Choose Folders to load an entire directory of OST files in one step.

Loaded mail appears in one tree with a checkbox beside every item, so OST to PDF converter handles many OST files in a single session. No file size limit applies.

OST to PDF converter email preview with content, header, properties, hex and raw views

Message preview

Preview OST Mail Before Converting

Click any message and a reading pane opens beside five analysis views. Use them to confirm correct mail before OST to PDF conversion starts.

Content shows the email body. Message header lists From, To, Subject and Date. Properties reports item data, while hex and raw message views show the stored mail.

OST to PDF converter export menu with email file and document formats

Output formats

Select PDF as Your Output Format

Select PDF under Document Files in the Export menu. The same load also exports PST, EML, MBOX and more, and the menu lists Gmail, Office 365, IMAP and Thunderbird for sending mail into an account.

Search by keyword first, then save only matched items. Quick search highlights hits in yellow, and Advance search checks every field or only name, subject, To, Cc and content.

Export options

Set PDF Export Options Before You Save

Switch on open folder after export, skip greyed out folders, create empty folders and include email headers. Every folder converts to a matching folder of PDF files, so your tree stays in order.

Select Browse to choose a destination, then Save. Live progress shows every folder as it converts, and Open Folder takes you to your PDF output.

Working process

How to Convert OST to PDF in Four Steps

Four steps take your OST files to PDF. Try them on a few files in free demo first.

Add your OST files

Start OST to PDF converter, select Open, then Email Data Files and add your OST files. Select Choose Files for one file or Choose Folders for many.

Preview and select mail

Your OST folders load as one tree. Click any email to preview it, tick what you need and search by keyword to trim your OST to PDF conversion.

Choose PDF output

Select Export, then PDF under Document Files. PST, EML, MBOX, HTML, TXT sit in the same menu for other jobs.

Save your PDF output

Set options, select Browse for a folder and press Save. Live progress shows every folder, and Open Folder takes you to your PDF output.

For more ways to save mail as PDF, open Save Outlook email as PDF and Convert PST to PDF.

Working process

OST to PDF Converter Video Walkthrough

Prefer text? Open Save Outlook email as PDF for the next move with your finished PDF output.

Advanced options

More OST to PDF Converter Features for Big Jobs

Small options that save hours when you convert OST files in bulk with OST to PDF converter.

Bulk OST input

Many OST files convert in one session

Folder hierarchy

PDF output follows your OST tree

No file size limit

Any OST size and mail count converts

Five preview views

Content, header, properties, hex and raw message

Advance search

Name, subject, To, From and content fields

Quick search

Yellow hit highlights in the preview

Chosen items

Convert contacts, addresses or attachments only

Attachment extraction

Save attachments alone, any size

Email address extraction

Save addresses to their own file

Empty folders option

Keep the full tree, even with no mail

Cloud upload

Send mail to Gmail, Office 365 or IMAP

USB and NAS targets

Save output to external drives and network storage

Output formats

OST to PDF Converter Output Formats

OST to PDF converter saves mail as PDF, and the same load exports more targets. Match your format to where your mail will open.

PDF

Readable pages for printing, filing and legal review

PST

A fresh Outlook file

EML

One file for every message

HTML

Messages that open in any browser

TXT and CSV

Plain text and sheets of mail details

Gmail, Office 365 and IMAP

Mail lands in the target mailbox

Any drive

Local, USB and network folders

Free demo

Test OST to PDF Converter on a Real OST File

Install free demo, load a OST file and choose PDF. Free demo converts 10 emails per folder, so your output is quick to check.

Download free demo

Try before you buy

Free Demo vs Full OST to PDF Converter

Free demo of OST to PDF converter opens, previews and searches your full OST file. Only conversion is capped.

Feature	Free demo	Full version
Open OST files and folders	Yes	Yes
Preview and search	All available	All available
Emails converted per folder	10	Unlimited
OST size and mail count	Conversion stops at 10 per folder	No limit
Price	Free	From $99 one time

Use cases

Who Needs a OST to PDF Converter?

Anyone who holds OST mail that will not open where needed.

Outlook and Exchange users switching programs

OST to PDF converter saves mail as PDF pages for printing, filing and legal review, so your mail opens in any PDF viewer.

IT admins

Convert a folder of OST files to PDF in one batch and hand every user a ready tree.

Legal and compliance teams

Save mail with headers and attachments intact for review and discovery.

Archive keepers

Convert OST files that only one program opens into PDF that more programs read.

Anyone with orphaned OST files

Open mail from an OST file that Outlook no longer opens and save it as PDF.

Selective exporters

Search by sender or subject and save only the matching emails.

Why Corbett

Why Choose Corbett OST to PDF Converter?

No subscription

Lifetime price from $99

Works offline

No sign-in and no upload

Originals stay safe

OST files open read only

envelope-fill

No Outlook needed

No size limit

Any OST size and mail count

Folders kept

Folders and subfolders stay in order

Smart search

Name, subject, To, From and content

30-day refund

Money-back window after purchase

Before conversion

OST to PDF Converter Scope and Limits

OST to PDF converter converts OST files into PDF. Here is what that covers and where it stops.

Capability	Supported	What it means
File to file conversion	Yes	OST to PDF, PST, EML, MBOX, HTML, TXT and more
Folder tree	Kept	PDF output follows your OST folders
Outlook installed	Not needed	Files open on a PC with no Outlook
Source OST files	Read only	Output goes to a new folder and your originals stay as they were
Internet and passwords	Not needed	Conversion works offline on local files
Calendars, tasks and notes	Check output	Mail is the focus, so other item types may stay in the source file
Mac and Linux	No	OST to PDF converter installs on Windows only

Manual route or tool

OST to PDF Converter vs Manual Route

Here is where the manual route stops, and where OST to PDF converter takes over.

Job	Manual route	OST to PDF Converter
Cost	Free	From $99 one time
One email	Open and save by hand	Works too
PDF output	Print one email at a time	PDF for every email in a batch
Many OST files	Slow and error prone	Folders of OST files in one session
Folder tree	Often reshuffled	Same as the source
Search before export	Basic search only	Name, subject, To, From and content
Outlook installed	Often required	Not needed

Global recognition

OST to PDF Converter Software Users Trust

Users rate Corbett OST to PDF converter 4.6 out of 5 from 683 reviews, and these software directories list it.

CNET
Download.io
UpdateStar
TopSoftware Advisor
SaaSHub
Uptodown

Specifications

OST to PDF Converter Specifications

Download details

Download size: 87.4 MB
Demo limit: 10 items per folder
Delivery: After payment, mail arrives with a download link and a licence key.
Licence: Personal: 5 machines. Business: 25 machines. Enterprise: 100 machines. Lifetime validity.

Download Now

System

Hard disk: 150 MB of free space
RAM: 4 GB of memory minimum
Processor: 1 GHz Intel Pentium minimum and 2.4 GHz advised
Interface: English
Input: OST files

Supported editions

Windows 11 (64 bit), 10, 8 and 7 in 32-bit or 64-bit, plus Windows Server 2016, 2012 R2 and 2008.

Start OST to PDF converter with administrator rights.

Corbett has built Windows email utilities since 2020. Setup trouble and first-use questions go to our support desk.

User testimonials

OST to PDF Converter Reviews

OST to PDF converter shares 683 reviews on software index sites and customer feedback.

4.6 out of 5

Collected across 683 reviews from software indexes and customer feedback. Three reviews below are unedited.

Perfect for the need

This OST to PDF converter is the perfect app to fulfill my needs so easily. I needed to convert my OST files to PDF format. This applciation did an amazing great jobin that regards.

Brayden Lucas

Problem solved

We had been looking to export my OST files to PDF. Fortunately, we found a software that could solve our problems without any hassles. We love this OST to PDF conversion software.

Harry Jims

Works really well

A friend of mine recommend me this OST to PDF File Converter. I use this tool to save my Outlook offline files and it work really well. I am happy that my friend suggest me this tool and want to thank to the software's tool to develop this amazing software.

Justin

Before conversion

Prepare Your OST Files for PDF Conversion

Three short checks keep your OST to PDF conversion clean.

Make a OST copy

Back up your OST files on a safe drive before you start. OST to PDF converter opens files read only, and a spare copy keeps the original safe.

Choose all mail or chosen items

Convert every folder at once, or limit the job to the folders and items you need.

Leave space for output

PDF files take more room than the source, so leave free space on the destination disk.

Need the OST in Outlook later? Open Import OST file to Gmail for another route.

Best practice

How to Keep Your OST to PDF Conversion Safe

A conversion only helps if your mail arrives complete. Four habits keep your data safe through it.

Back up first

Copy your original OST files before you start. Keep 3 copies on 2 types of media with 1 copy off site.

Start with one file

Convert one small OST file with OST to PDF converter and open a few emails in PDF. Catch a wrong setting before a large job.

Check the count

Compare the message count in the folder tree with the mail in your output before you close the job.

Keep originals until checked

Store your source OST files until counts match. Delete them only after you open converted mail.

Common questions

OST to PDF Converter FAQs

OST to PDF converter steps, formats, limits and licence answers.

What is an OST to PDF converter?

An OST to PDF converter opens Outlook OST files and saves every email as a PDF. Corbett OST to PDF Converter does that offline on Windows, so OST file converter needs no Outlook.

How do I convert OST to PDF?

Open OST to PDF converter, select Open, then Email Data Files and add your OST file. Preview your mail, select Export, then PDF under Document Files and press Save.

Can OST to PDF converter open an orphaned OST file?

Yes. It reads the OST file directly, so an orphaned OST or one from a deleted profile still loads. It does not need the original Exchange account or Outlook.

Can OST to PDF converter save mail for legal review?

Yes. Every PDF keeps headers, sender, receiver and date, and attachments stay with the mail. Switch on Include email headers for a full record.

Can OST to PDF converter save OST mail as EML or PST instead?

Yes. EML, MBOX and PST sit in the same Export menu, next to PDF.

Does OST to PDF converter keep email headers?

Yes. The Include email headers option adds From, To, Subject and Date to every PDF.

Can OST to PDF converter save only chosen emails as PDF?

Yes. Search by keyword or sender, tick the mail you need and save only those emails as PDF.

How is OST to PDF converter better than printing from Outlook?

Printing from Outlook saves one email at a time and needs a working profile. OST to PDF converter saves folders in one session and reads OST files Outlook cannot open.

Can OST to PDF converter convert many OST files at once?

Yes. Select Choose Folders and load a directory of OST files, then OST to PDF converter converts every file in one session.

Does OST to PDF converter keep my folder tree?

Yes. PDF output follows the order of your source folders, and the Create empty folders option keeps folders that hold no mail.

Does OST to PDF converter keep attachments?

Yes. Attachments stay with every message, and a separate option saves attachments alone with a file extension filter for specific types.

Can OST to PDF converter convert only some emails?

Yes. Advance search filters by name, subject, To, From and content, and OST to PDF converter converts only matching mail.

Can OST to PDF converter preview mail first?

Yes. Click any message and five views open: content, message header, properties, hex and raw message.

Can OST to PDF converter send mail straight to Gmail or Office 365?

Yes. Gmail, Office 365 and IMAP sit in the Export menu. Sign in to the target account and the mail lands there.

Does OST to PDF converter have a size limit?

No. OST to PDF converter sets no size cap, and batch mode takes many files at once. Keep free disk space for your output.

Does OST to PDF converter need Outlook?

No. OST to PDF converter reads OST files on its own, so it works on a PC without Outlook.

Will OST to PDF converter change my OST file?

No. OST to PDF converter opens your files read only, and output goes to a new folder.

Does my OST data pass through Corbett?

No. Conversion happens on your PC with no upload. Corbett never sees your OST files or messages.

Does OST to PDF converter work on a Mac?

No. OST to PDF converter installs on Windows only. Copy your OST files to a Windows PC and convert them there.

How many emails can free demo convert?

Free demo of OST to PDF converter opens your files, shows every folder and gives you every search and preview. Conversion stops at 10 emails per folder, enough to test your output before you buy.

Which Windows versions work?

Windows 11 (64 bit), 10, 8 and 7, plus Windows Server 2016, 2012 R2 and 2008. There is no macOS or Linux build.

How many PCs does one licence cover?

Personal licence covers 5 machines for $99, Business covers 25 for $299 and Enterprise covers 100 for $499. All three are one time payments with lifetime validity, 24/7 support and a 30 day refund.

OST guides