OST to Office 365 Migration Tool

Export & Import OST File into Office 365 with Attachments

  • Easily migrate OST file to Exchange Online including emails, contacts, calendars, journals etc.
  • Unlimited OST Offline File conversion process in a single round only.
  • Effortless-solution to backup OST file Office 365 including attachments, formatting, images etc.
  • It perfectly retains the entire folder structure in a proper manner even after the procedure.
  • Advance I am Admin and I am not Admin options for implementing the required OST to O365 migration.
  • Date Filter option facilitate users to perform selective OST file migration at a time.
  • Permits migration of healthy OST files to Office 365 account without any error.
  • Save Report button for saving entire migration progress of OST file to Office 365 environment.
  • Easy graphical interface supports the process to import OST to Exchange Online by technical and non-technical users.
  • Windows Supported platform that makes it perfect application for access on any Windows OS platform.
  • FREE Trial Edition available for moving first 20 OST items per folder to Exchange Online without cost.

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Which Data Components Extracted From OST Mailboxes?


Email Messages

OST to Office 365 Migration Tool extract all email messages including complete meta-data properties. In fact, it facilitate the read or unread status properly maintained.

Mail Attachments

All email attachment as like documents, images and files can be transferred.

Category & Priority

Software will keep Category & Priority same even after the export process.

Mail Folder

The complete email folder structure look same as original even after uploading on O365 Cloud account.

Date Filter

Using this tool, users can easily export emails to office 365 within a specified date range.


Calendars & Appointments

Recurring Appointment Series and Appointments are migrated including Start Date, End Date, Subject, Location, Category during OST to Office 365 Migration process

Calendar Attachments

All Files or Documents, Cloud Attachments such as OneDrive link are perfectly transferred with their respective event or appointment to Exchange Online destination.


With the tool, Save appointment reminder settings is possible.


Export OST Tasks with entire details like Due Date, Start Date, End Date, Priority, Reminder, % Complete, Reminder etc.

Task File Attachments

Software supports any type of document file attached in Task.



Email address bookss, Mobile number, Work address, Home Address, Location associated with a single contact cane be easily extracted.

Characterstics of OST to Office 365 Migration Tool

Take a Brief Look on the Various Features to Import OST to Exchange Online

Unlimited Migration into Outlook Web App

The tool is the fantastic way which works flawlessly to perform the solution of how to add OST file in Office 365 account without any single error. It provide batch mode functionality for users who interested to upload bundles of OST files into Office 365 Cloud Storage in a single migration round only. Using this amazing functionality, all users can simply perform the backup OST file Office 365 process.

Migrate OST Mailbox to Exchange Online

OST to Office 365 Converter Tool designed in a perfect way that enables user to transfer the complete OST folder to Office 365 account including emails, contacts, calendars, journals and all other items. The application will display the complete hierarchy of OST file on the software and allows to select or deselect the required folder and enables to perform the migration as per need.

I am Admin and I am not Admin option

The OST to Exchange Online Migration Tool supports two selections i.e. I am Admin and I am not Admin. By choosing I am Admin option, users need to enter the login details of Office 365 admin for once and directly move the OST files to required ID of Office 365 admin account. Whereas if you are not admin of Office 365 account and want OST files in the desired Office 365 User ID, then I am not Admin option is useful.

OST File Mapping in Multiple Accounts

In order to move OST files to particular ID of Office 365 admin account, then it can be possible with the help of OST to Office 365 Migration application. The option of I am Admin helps in achieving this process. The option includes the tab of Office 365 User ID that is displaying next to OST files. You can specify the User ID of Office 365 admin account under the same and move OST file accordingly in seconds.

Multiple Filters for Selective File Conversion

Maximum time we observe that some user want to convert selective OST file into Office 365 account at a time. So, for this here the tool offers multiple filters option in which you have to select the date range or enter the require detail in To, From, Subject box for getting the complete output database as per the provided filter during the conversion process.

Outlook Installation not Important

With the help of OST to Office 365 Migration Tool, any technical and non-technical user can efficiently perform the solution of how to move OST file Office 365 account without any hassle. It's a stress-free solution which can be access by even home user to regulate the entire export process.

Preserves Read/Unread Status of OST Emails

While performing the import OST file Office 365 process, this software maintains the read/unread status of emails even after that completion of migration process. Without change any file or data, the user will get their output database into Exchange Online.

Login Credentials Required for Process

OST to Office 365 Migration Tool works very familiar with its users, that's the reason maximum users wants this expertise solution to shift their database on Cloud. During the process, this software will ask the login ID and Password of your Office 365 account which helps to continue the process.

Save Report option to Save Migration Process

Once the OST to Exchange Online Migration Tool completed the process of moving OST file to Office 365. It will enable to two options i.e. OK and Save Report. Clicking on OK will take you out from software screen and clicking on Save Report will generate CSV file and save the migration process report that contains the detail of User Name, OST File, File Size, Total Item, Item Count, Start Time and End Time.

Friendly to Operate on all Windows Editions

The software is a Windows compatible program which means users can download this application on all latest and earliest Windows editions like Windows 7, Windows 8, Windows XP, Windows 10 and all others.

OST to Office 365 Converter Screenshots

Some of the screenshots are available which going to help you out in the conversion process. Let's have a look on the given below images.

Specifications of OST to Office 365 Tool

Easily upload OST mailbox items to O365 Cloud Storage to fulfill the Requirements

Software Name: OST to Office 365 Tool
Free Download:

Download for Windows 100% Safe & Secure Buy Now 30 Days Money-Back Guarantee*

Version: 1.0
Processor: Minimum 2.4 GHz Processor
RAM: Minimum 512 MB
Minimum Hard Drive Space: 17.4 MB
Operating System: Windows OS: Windows 10, 8.1, 8, 7, Vista, XP, Windows Server 2019, 2016, 2012, 2008, 2003, etc.
Demo Version: Trial Edition of OST to Exchange Online Migration Tool extracts only first 20 items per folder and saves them into Office 365 account
Installation & Un-installation for Windows: Guide Install/Uninstall EULA

Frequently Asked Questions

Listed Commonly Asked Questions and Answers

Don't worry, you can use the Add Folder option of OST to Office 365 Tool which supports bulk file conversion in a single round.

Rename the all Outlook.bak files with .ost file extension and then follow the complete working guide to perform the conversion process.

Yes, it's an amazing utility which superbly workable to transfer OST data to O365 without Outlook configuration.

Use Apply Date Filter option and select the date range to perform the selective OST file migration process.

Yes, while performing the process you will get preview functionality in which you can opt the save attachment option.

Follow the simple steps to perform backup OST file Office 365 process:

  • First, you have to open OST to Office 365 Converter and add the files by using Add File and Add Folder option.
  • Then click on Select All option to move all OST file or select the corresponding checkbox of OST file and move them to Office 365
  • Now, click on I am Admin option if you are having Office 365 admin account and want to send OST files to required USER ID of Office 365 account. Click I am not Admin if you do not have admin account and want OST file in required Office 365 User ID.
  • Apply filters if you need, otherwise go with the Export button to start the process.
  • Finally, the process will be complete within a few minutes. After the process click OK to exit from the screen or click Save Report to save the complete migration process report.

Using free trial, you can only convert first 20 OST items to Office 365 account.

No, OST to Office 365 Migration Tool is a Windows based application which only can be access only on Windows OS platform.

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