OST to Office 365 Migrator



OST to Office 365 Migrator

It is an effective solution to the problem of migrating Outlook Offline data file(OST) to Office 365. The size of OST file will not be any kind of hindrance in entire process.

  • Allows to Preview All Emails with Attachments of OST File
  • Migrate OST to Office 365 with Emails, Calendars, Contacts, Notes, Tasks & Journal
  • Outlook Installation is Mandatory to Perform OST to Office 365 Transfer Process
  • Supports All Outlook Versions Including Outlook 2016, 2019
  • Convert Corrupted / Damaged OST File to Microsoft Office 365
  • OST to Office 365 Migrator Supports OST File of Compressible & High level Encryption
  • Compatible with Windows 10, 8, 7, Windows Server 2016, 2012 R2, 2008

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OST to Office 365 Migrator – Overview

Introduction to OST File

OST (.ost) files only belong to MS Outlook. As long as Exchange Server is configured for Outlook, the Outlook data files stored locally are in OST file format. OST files are convenient for users to access Outlook email accounts offline, and synchronize after connecting to the Internet. You will find the OST file at this location on the system.

Key Features of OST to O365 Migrator

Some Highlighted Features of OST to Office 365 Migrator

Import OST to Office 365

Import OST to Office 365

With this software application, You can easily convert OST file to Office 365. This tool is capable enough to transfer emails, contacts, calendars and tasks along with attachments. The folder structure also remains unchanged without any data loss.

Selective Data Migration

Selective Data Migration

Various options are available to choose the data you want to migrate. From the Category option of Setting button, you need to select the data items like emails, contacts, tasks, calendars. No need to waste your precious time in transferring unnecessary data.

Twofold Scanning Modes

Twofold Scanning Modes

The software provides two options for the scanning process: Quick and advance scanning for minor and major corruption respectively. You can use the option as per your need.

Opt Date Filter

Opt Date Filter

Along with selective data transfer the data can be filtered precisely on the basis of date. By entering the date range. You will be able to move the OST file data of particular date to Office 365.

OST to Office 365 Migrator Tool System Requirement

Software Download

Size: 35.4 MB

Version: 8.0

MD5: 4a50ab67f60930bae384dc0ff2e3e4a9

Trial Limitations

Demo of OST to Office 365 Migrator only export only 25 items per folder.
Note: To Export in PST format, Check 'Use Outlook (Requires Outlook to be installed on machine)' option.

System Specifications

Hard Disk Space
100 MB of free hard disk space required

4 GB of RAM

Minimum 2.4 GHz Processor

Supported Editions

Windows 10, 8, 7 (32 bit or 64 bit) and Windows Server 2016, 2012 R2, 2008.
Microsoft Outlook 2000, 2003, 2007, 2010, 2013, 2016, 2019 (32-Bit & 64-Bit)
Office 365 Enterprise E1 / E3 / E5 / Business Premium / Essentials & Exchange Online Plan 1 / Plan 2 & Office 365 A1 / A3 / A5 / F1


  • Microsoft .NET framework 4.5 or above should be installed.
  • If you are using Window 10/8/7, then please launch the tool as "Run as Administrator".
  • Exporting in PST Format:
    • MS Outlook installation is required, if using 'Use Outlook' option in Export Option Window.
  • Exporting in Office 365:
    • Admin account of Office 365 must be Impersonated, if migrating to Admin account.
  • For Remove Email Encryption option:
    • Certificates and respective passwords to decrypt SMIME encrypted Emails.
    • Private Keys and respective passwords to decrypt OPENPGP encrypted Emails.


Q. Is your Antivirus blocking the software export process?

A. Please disable Anti-virus temporarily / Allow access (Whitelist) from Antivirus settings for proper working of the software.

Q. Unable to Create Output in destination?

A. Please avoid NAS, SAN, Network or Shared Drive. Source file should be on the migration machine to perform successful conversion.

Electronic Delivery

The delivery of the product is automated, You will receive an email containing both the link to download the product and the activation key within few minutes after payment confirmation.

Features Comparison

Get an Overview of OST to Office 365 Migrator Features – Free and Full Version

Features FREE Version FULL Version
Add OST File(s)
Search OST Files
Decrypt OST Emails from S/MIME or OpenPGP Encryption
View OST Emails with Attachments
Quick/Advance Scanning for Corrupted/Damaged/Deleted Items
Windows 10, 8, 7 (32 bit or 64 bit) and Windows Server 2016, 2012 R2, 2008
Migrate OST to Office 365 25 Items/Folder All Items/Folder
Cost FREE $49

Frequently Asked Questions

Listed Commonly Asked Questions and Answers

No, There is not any file size limit for OST file.
No, the software is only developed for Windows OS 10, 8, 7 (32 bit or 64 bit) and Windows Server 2016, 2012 R2, 2008..

What Customers Are Saying

Verified Purchase Reviews – OST to Office 365 Migrator Tool

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