Free OST to Office 365 Converter Tool

Utterly an answer to import or upload OST to Office 365 cloud account

The most emerging questions of the people using Exchange server are related to the ways to import & upload Outlook OST mailboxes to Office 365 account. As it is a cumbersome task, so eSoftTools has presented an automated solution: - eSoftTools Free OST to Office 365 Converter Software. This is advance enough to repair corrupt and damaged OST file & triumphantly export OST to Office 365 along with emails, calendars, notes, contacts, journals, etc.

  • Free OST to Office 365 conversion

    A facility to try this tool for free is offered to every single user and exeutes well with all versions of Exchange OST file irrespective of its size and edition.

  • Upload offline Outlook mailbox in Office 365

    Import all items of OST file in Microsoft's cloud account in the exact hierarchical order of the resultant file.

  • Recover and back up OST file data in Office 365

    Corrupted, encrypted or damaged OST file can be restored in a mouse click and later on, it is saved in MS Office 365 account.

Special Super Saver Offer

Buy OST to Office 365 Converter Software & Grab EML to Office365 Migrator for FREE FREE FREE Worth USD 29USD

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Product box of OST to Office 365 Converter Software

Instant Delivery of the Software via Email

30 days return policy

Foremost Key Features of OST to Office 365 Migration Software

  • Fix defiled, orphaned, or damaged OST file and export OST file to Office 365
  • Simple interface to assist users to upload chosen folders from OST file conversion to cloud (MS Office 365)
  • Displays preview of complete OST emails, contacts, calendars & other folders before saving or exportation
  • Allowance to convert Offline Storage file of large size up to 1TB OST file
  • Maintains pyramidal structure of each folders structure
  • No Outlook or Exchange connectivity required to save OST to Office 365 platform
  • Perfect for conversion, exportation or recovery of OST files
  • Supports ANSI and Unicode OST File to migrate its mailboxes items to office 365
  • Recover and convert password protected/ encrypted OST file to Office 365
Download BuyNow at $49 Software Working

Demo version: Upload maximum 25 items from each folder of OST file for Office 365 migration.

Why should we go for this eSoftTools OST to O365 Converter Tool?

As Cloud migration is trending due to it's feasibility, keeping Exchange OST data in Office 365 is a nice idea. This OST file to O365 Converter could be a standalone tool to complete migration without any modification in the data and its index order.

Performs well with all adaptation OST file and Windows OS

This software is compatible with all editions of Microsoft Windows OS, OST file and Outlook

Smoothly functions well with OST file, comprising: 2019, 2016, 2010, 2007, 2003, 2000, and below versions.
Operates well with all Windows OS and Windows Server OS incorporating: Win10, Win8, Win7, Windows Server 2019, and other variants.

Installation of Outlook is not required to import OST to Office 365

technical support

24 x 7 Technical Assistance

The user experience is the core area of consideration, and hence the user gets help instantly regardlesss of location and time.

free Ugrades

The user the facility to avail free updates for their registered license without any hassle.

To use an upgraded version, reach us through live chat or email on support[@]esofttools.com

OST to Office 365 Conversion Software- Upload OST to Office 365 storage

Retrieve data of OST file in cloud-based applications like Microsoft Office 365 with eSoftTools OST to Office 365 Converter Software. It offers a service to its each valuable client to have a look to entire database even though it is not in an accessible state. Besides this, having OST mailboxes data on Office 365 has many advantages. The data can be saved in Office 365 so that emails are collectively accessible if there is internet connectivity and no longer needs synchronization from Server. Outlook OST to Office 365 Migration is the best recovery application for repair damage, corrupt OST file & to save OST to Office 365 while extracting every single type of folder and email with attachments.

Export OST to Office 365

Export offline OST to Office 365

eSoftTools Free OST file to Office 365 converter is an application that can be used to repair damaged, corrupted OST File in order to Export/ Import Outlook OST file into office 365 along with emails, contacts, calendars, task and another items.

Import Selective OST Folders

Well designed intuitive interface of this Software provides unique facility where users can pick up the folders from OST file mailbox to import OST data into Office 365 layout. The unwanted part is left in the original form. This accelerates the entire process of entire conversion.
Select OST file to convert OST to O365
Recover orphaned OST to Office 365

Recover corrupted/ encrypted OST File

No need to be worried about damaged and corrupted OST file if you have decided to convert its data into office 365 because now eSoftTools Free OST to Office 365 Migration Software is capable to fulfill task of conversion with OST file (ANSI & Unicode) in any state (corrupted, healthy, encrypted).

Migrate OST Contacts to Office 365

This tool is not limited to emails of the mailbox and thus contacts folders of Outlook OST file can be converted into MS Office 365 cloud-based account too. It lets you to collect all folders with contacts of OST mailbox and save their individual folders items into Office 365 without any miss.

Convert OST contacts to Office 365
Preserve attributes of OST email

Preserve Emails with all attributes

Preserving folders structure and emails formatting is very important for users so eSoftTools Outlook OST to Office 365 Conversion Software ensures not to make changes and restore emails with all email attributes comprising to, bcc, cc, time, subjects, attachments, from, etc.

Convert OST Calendars to Office 365

Upload OST file to MS Office 365 file type with capability to scan complete mailboxes folders. Each event of the calendar can be backed up in cloud with all constituents such as Start time, End time, location, etc with a preview of complete conversion process only for satisfaction.

Save OST calendar to Office 365 account

Looking for a way to Convert OST to PST Outlook file?

This tool can efficiently migrate from OST to Office 365. But in case if you are looking for a technique to export OST to PST file, then try eSoftTools OST to PST Converter Tool. It enables the user to save OST file into PST, EML, EMLX, HTML, MSG, vCard, CSV, MBOX and Office 365

eSoftTools OST to Office 365 Converter Software

First screen of OST file Converter Software

The starting screen of OST file Converter Software

Selection of OST file

Option to select .ost file from the system.

A preview of OST file components

A glimpse of the OST file mailbox is shown.

Upload or Import OST to Office 365

The panel to convert or import OST to Office 365 account.

Software Comparison - Demo vs Full Version

Software Features Trial Version Full Version
Preview all mailbox consituents of the OST file
Detection of .ost file
Upload complete OST mailbox to Office 365 Demo adaptation allows to upload only 25 items in MS Office 365 account.
Anytime or anywhere Assistance
Download Now BuyNow ($49)

Software Specifications

System Requirement
ProcessorPentium Class

Memory512 MB Minimum

Operating SystemWindows 10, 8.1, 8, 7, Vista, XP

Install Space50 MB of free space

Supported Editions
All versions of MS OST file 2016, 2013, 2010, 2007, and others.
The demonstration helps the user to import or convert 25 OST file items to O365 from each folder.
It is mandatory to have internet connection for OST to O365 migration.

What is the method of OST to Office 365 migration?

Open this tool and provide OST file. Simply choose the components and click on Convert Office 365 option. Login into the Office 365 account and proceed.
How Software Works

Frequently Asked Questions (FAQ)

No, there no need to install MS Outlook application you can without outlook application run OST to office 365 Export Software and export all database from OST file to Office 365.
Yes, this OST to Office 365 Migration Software allows users to recover calendars folders and convert them into office 365 with maintains data integrity
Yes, the eSoftTools OST to Office 365 Export Software supports all types OST file like- corrupted, encrypted, damaged and healthy OST file for conversion data into Office 365.
You can convert multiple OST files but at single time you are to browse one OST file; as one file conversion complete then you can move to another to browse for conversion.
Yes you can easily get back corrupted or orphaned OST file with eSoftTools OST to Office 365 Converter. Also you can store the data data into O365 account.
No, this tool only supports OST to Office 365 conversion. But one can also try convert OST to EML without making changes with eSoftTools OST to EML Converter Tool.

Client Most Valuable Review's


(Rated 5 Star)
eSoftTools OST to Office365 goes above and beyond my expectations. A few times back I am looking to import OST to Office365, I look over more than articles but no one helped me and I got more confusion about how to access emails on Office365. I do searching over Bing! and reached over the eSoftTools blog area where I saw, a tool eSoftTools OST to Office365 is available to fix my problem. Then I try the evaluation version and check the software efficiency. After that, I decided to go with licensed software and import my OST file to Office365 without any problem. Good work team.
[ Jean Espinasse ]  [ France ]
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OST to Office365 Converter

OST to Office365 Migrator tool help users to easily import OST to Office365 with all email messages, contacts, calendar, and all other stuff's of OST mailbox. The tool specially designed to work on healthy as well as orphaned OST file to Office365 migration.

  • Do Single click and import OST to Office365 account.
  • Any type and any size of OST file imported successfully by the tool.
  • Import into Primary Mailbox supported
  • User has ability to create new folder and import OST folders inside new folder.
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OST to Office365 Converter Software