CubexSoft OST to Office 365

OST to Office 365, Best Migration Tool for Mac & Windows OS to Backup OST Emails, Attachments, Contacts, & Calendar to Office 365 Account with 100% accuracy

  • Batch transfer OST mails to Office 365 quickly
  • Move OST to Outlook Web App with contacts and calendar
  • Ability to maintain metadata properties and folder structure throughout process
  • Provides the option to ignore system folder hierarchy
  • Includes multiple languages for desired OST file conversion
  • Enables to backup OST file of all user accounts using I am Admin option
  • Allows to directly move OST items to default folders of Office 365
  • Quickly generate log for messages that are failed in conversion
  • Capability to run on all versions of Windows OS & Mac OS
  • Supports all Outlook and Exchange Server editions OST files for migration
  • No file size limitation, performs unlimited migration at one time
  • Offers Add Files, Add Folders and Load Outlook Profiles option to load OST file.




Reliable Features of OST to Office 365 Tool

Secure Method for Mac & Windows Users - Batch Export Multiple OST Mailboxes into Office 365 Single User/Admin Account

Batch Migration by using I am Admin Option

In order to migrate batch OST files of multiple accounts, it is recommended to make use of I am Admin option. You can select the associated checkbox, enter administrator account details of Office 365 and migrate unlimited OST file to different Office 365 user accounts at once with 100% accuracy. If you want to move OST files to a single user profile then you can directly enter single user details and migrate OST files to desired account.

Multiple Languages to Migrate OST to O365

OST to Office 365 Tool provide multiple languages for desired migration. By clicking on Change Language checkbox, the tool enables the language button showing Dutch with drop-down arrow. Click on the same; choose the desired language in which you want to migrate OST data to Office 365 account.

Create Log for Messages not Converted

OST to Office 365 Tool includes the option of Create Log for Messages not Converted. By selecting the checkbox, software will generate a log report of OST files that unable to get converted during the on-going process.

Exchange Server is not Required for Migration

As OST files are created where the Outlook is configured with Exchange environment. But, in this case, software only needs OST files/folders. It is not important if the system is configured with Exchange Server or not. the application is entirely an independent conversion utility. Its task is to directly move OST folders to Office 365 without an error.

Preserves Email Formatting and OST Folder Structure

There is nothing to worry about if you are executing batch OST file to Office 365 migration (Mac OS or Windows OS). Because the tool not only carries out the conversion process but also takes care of the entire OST mailbox data and folder structure. Once the software completes the task of Outlook OST Offline to Office 365 migration, you will find that all the data is in exact form and the folder structure is maintained as before.

Supports all Windows OS and MS Outlook Editions

OST to Office 365 Converter Tool is downloadable and runnable on all versions of Windows OS (supports both 32-bit and 64-bit editions) – Win 10, 8.1, 8, 7, XP, Vista etc. Moreover, one can migrate any Outlook edition OST file to O365 account i.e. Outlook 2019, 2016, 2013, 2010, 2007, 2003 etc.

Copy OST Files to Default Folders of O365

The application provides the option of Copy to default folders. Clicking on its related checkbox, software will get the permission to move OST data to already created folders of Office 365 account. If it is not selected, then the tool will create its own folder and named it as CubexSoft.

Selective OST to Office 365 Migration

The utility allow users to migrate desired OST folders to Office 365 profile. When the software loads the items of OST file, a checkbox will display with every data folder. A user can select/deselect them as per need and move only desired item to OWA account with no data alteration.

Import OST File to Office 365 with Complete Data

By making use of OST Migration Tool, one can quickly move Outlook Offline mail folders to Office 365 with entire attached items. The application offers the separate functionality that allows exporting of OST contacts and OST calendar to Office 365 account.

Multiple Options to Load OST Files/Folder

OST to Office 365 Tool provides multiple options to load OST files/folder. By clicking on Select File/Folder button, the application will show three options i.e. Add Files, Add Folders and Load Outlook Profiles. Add Files allows to load desired OST files for migration to O365. Add Folders enable to load entire OST folder filled with multiple OST files. And, Load Outlook Profiles facilitate to add OST files directly from Outlook.

Screenshots of OST to Office 365 Tool

Below are the highlights of software working by using which you can understand the step-by-step working process of OST to Office 365 tool-

OST to Office 365 – Free Download

Get the Specification Preview to Download & Use the App on Mac or Windows OS

Software Name: CubexSoft OST to Office 365
Free Download:

Download for Windows 100% Safe & Secure Download for Mac 100% Safe & Secure

Version: 2.0
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.
Mac OS: Monterey, Big Sur, Catalina, Mojave, High Sierra, Sierra, El Capitan, Yosemite
Demo Version: Take a Trial - Download Free OST to Office 365 download edition and migrate 20 emails to O365 cloud which facilitates to know the software functioning before purchasing the license key.
Installation & Un-installation for Windows: Guide Install/Uninstall EULA
Installation & Un-installation for Mac: Guide Install/Uninstall

Frequently Asked Questions

Commonly Asked Queries & Solution of OST to Office 365 Tool

Yes, follow the steps carefully and you will successfully move unlimited OST files into O365 account directly in an exact way -

  • Step 1. Launch and Open OST to Office 365 Software on any Windows OS.
  • Step 2. Click on either Add Files, Add Folder or Load Outlook Profile folder option to add OST file
  • Step 3. Software will then scan OST file
  • Step 4. The tool will display entire OST data folders on software pane with checkboxes. You can select/deselect them accordingly for selective OST to OWA conversion.
  • Step 5. Now, navigate to drop-down arrow of Saving Options button and select Office 365 from the available list. Enter the single user/admin login details in which you are looking to migrate OST folders. In addition, it is recommended to select I am Admin option, if you want to backup all user accounts in a single step. Once done, click on Connect button.
  • Step 6. Software start connecting to Office 365 account and open another window of Mailbox Mapping. It will display three tabs that includes OST Users, Office 365 Users and Select.
  • Step 7. Click on Select button, multiple accounts of admin profile will appear. You need to choose the desired one in which you want OST data.
  • Step 8. Press Convert button to start the OST to O365 conversion process.

No, in order to move OST file to new profile Exchange Server configuration is not required. The software is capable to migrate OST file to new profile i.e. Office 365 without the support of Exchange Server and MS Outlook.

Yes, by selecting Contacts tab, you can move OST contacts to respective formats with accurate details and formatting properties.

Yes, you can use the application on any version of Windows & Mac OS. It does not matter which Windows or Mac OS version you are working on.

No, This OST to Exchange Online Software supports only healthy and good OST files.

Yes, keep all your OST files in a single folder. Choose the same by clicking on Add Folder button and load it on the software pane for migrating 30k OST files to O365 account at one time.

To view migrated file, follow the steps-

  1. Go to Login with the same Office 365 credentials that you used while uploading OST files to O365 with the software.

  2. A list of all the subscribed apps will be shown. Click on Outlook to open it in new tab.

  3. Click on the OST file that you just imported in your O365 admin account to view all its data including emails, contacts, calendars, journals and all other items.

Yes, there are many manual techniques that allow you to fix issues in OST files. The most common is Outlook's in-built Inbox Repair Tool (ScanPST.exe) that repairs minor errors in OST files. The tool can be found at the following location :

  • MS Outlook 2019 and 2016: C:\Program Files (x86)\Microsoft Office\root\Office16
  • Outlook 2013 : C:\Program Files (x86)\Microsoft Office\Office15
  • Outlook 2010 : C:\Program Files (x86)\Microsoft Office\Office14
  • Outlook 2007 : C:\Program Files (x86)\Microsoft Office\Office12

After going to the Outlook location (depending on the version you are using) select the SCANPST.exe and double click to open it.

Step 1. Click on Browse to select the corrupted OST file and click on Start.

Step 2. The tool will scan the OST File and check for errors. After complete scanning, it will show the errors, if any.

Step 3. Now Browse for the location to save the repaired OST file and click on repair.

Step 4. The software will repair and save the file at your specified location with the name *.bak

There is no manual method that will help you directly import Outlook OST to Office 365 account. However, there is a workaround available that may help you out. But you need to be technically proficient to perform it as it involves a few stages (each including a lot of steps) that need to be cleared accurately. Otherwise, you may end up yourself in a big blunder.

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