Free* Migration Tool from PST to Office 365

Migrate your data from PST files into Outlook 365 for free. Effortlessly transfer emails, contacts, and other data. The best PST file freeware migrator app.

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System Requirements

PURCHASE

The software you can trust. Licensing (EULA)

OST2 Customer Reviews

4.9 out of 5

Average Rating: 4.9/5 - 651 reviews

“ The OST2 software worked well for me. Helped me recapture some Microsoft Outlook data I otherwise would have lost. ”

larry h,. usa

About OST2

OST2 - Conversion of connected OST file to PST file

OST2 is a Windows software download for Microsoft Outlook Desktop. Using OST2 you can convert OST files to PST format automatically. OST files that are not connected to Outlook anymore can be converted as well. OST2 will automatically connect converted files to Outlook.

Features

Convert OST Files to PST Format

Use OST2 to copy data from Exchange OST to PST. Easily save contents even from orphaned Microsoft OST files. Change file format to Outlook PST and access data anywhere. Converting OST to PST has never been simpler.

Import Converted PST Files to Outlook

Convert OST and attach the converted file to Outlook. After OST conversion to PST file, adding it to Outlook automatically is easy. Uploading PST to Microsoft Outlook manually is not needed. OST2 is able to load single or a batch of files.

Recover Orphaned OST Files Without Exchange

Open OST data without Microsoft Exchange server account. Restoring access to disconnected OST is difficult without OST2. Our software allows a recovery of orphaned Outlook OST data. Effortlessly restore access to an offline Microsoft Outlook OST file.

MORE FEATURES

Back up an Exchange Mailbox

OST2 allows backing up your Exchange mailbox data. In case of Microsoft Exchange server failure - get back access from PST. Store your user mailbox backup locally.

Export Data From Corrupt OST

Extract corrupted data using "Recovery Mode" in OST2. Even if OST file cannot be opened in any other tool. OST2 will help to extract and review Outlook items in case of OST corruption. Saving and exporting data out of damaged files using OST2 extractor is easy.

Resize Large OST to Small PST

Once OST file reached 50GB, it becomes too large to handle. Compress oversized OST into smaller parts. Compact too big OST into smaller Outlook PST files.

Locate any Outlook Data File on Computer

Detect OST and PST files on your computer automatically. There is no need to browse for a file manually. A scan of OST or PST can be done by clicking a button in the program’s interface.

Compatible with all Outlook Versions

OST2 supports all versions up to Office 365 (2003, 2007, 2010, 2013, 2016, 2019 and 2021). Compatible with all latest Microsoft Windows versions. Office 365 is fully supported, including O365 Exchange and its Outlook files.

Money Back Guarantee

Enjoy our 14-Days No Risk Full Money Back Guarantee. If you are not satisfied for any reason, you will get your money back.

How To Get Best Technical Support

Our top support team has more than 10 years of experience. We will help with any How To question regarding Microsoft OST. Get Step by step guide and help from personal assistant. The best way to get quick help is to contact us.

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How to use Free PST to Office 365 Migration Tool

Just follow these simple steps:

Download, install and launch OST2 on your PC.
Click "Migrate/Transfer" button.
Select PST files for migration.
Select the destination Office 365 account to add the data.

OST2 tool will handle data migration from PST to Office 365.

About 4Team Corporation

the company behind OST2

We are a Microsoft Gold Certified Partner and independent software developer for MS Outlook. Since 1999 we have provided solutions to our corporate customers and individual users worldwide. We are very proud to offer award-winning support and be highly recommended by our satisfied customers.

Our satisfied customers

Customers all over the world are successfully using 4Team Corporation services for personal and business needs