Quick Way to Open OST File in Outlook 365

User Query:- It’s steven here for some time I’ve been looking for a way to open OST file in Outlook 365. Because my company provides its services worldwide. And for me to reply all the emails any time becomes a difficult task with Exchange server. Now I decided to import OST file data in Outlook 365 so I can access my emails at any time. Is there any way to perform this task please let me know.

Keeping in view the user’s query we decided to provide the automated solution that will help you to open OST file in Outlook 365. If you also come in the same situation then you should stay with this article.

Through this guide, you are going to know the reasons to add OST file to outlook 365 and the methods used to complete this process.

The basic thing you should know for opening OST into Office 365 you need to import OST file data into Office 365. And for this task here we will be using SysInspire OST to PST Converter.

Needs to Import Outlook OST to Office 365

Let’s identify the needs that force the users to import Outlook OST to Office 365:-

  • Becuase Outlook 365 has more advanced features.
  • Exchange server is not available 24/7 where as Outlook 365 is cloud based platform it can be accessed any time.
  • For skipping the server maintainance downtime situation.
  • User can access there data from remote locations with Outlook 365.

After knowing all the causes behind migration from OST to Outlook 365 now the question comes up how to do it. To access all OST file data in Office 365 you need to follow the below methods.

Method to Open OST File in Outlook 365

We mentioned the automated method which is the only suitable solution for importing OST data into Outlook 365. And the reason why we don’t provide the manual method it has many drawbacks. Like there is a high chance of losing data any wrong step can stop the workflow of your email client.

So the best way is to use the SysInspire OST to PST Converter tool which is the finest solution to open OST file in Office 365. It directly allows its users to import OST data to Outlook 365 with all its mailboxes and its folders and sub-folders.

export ost to outlook 365

This utility provides the quick feature to export OST to Office 365 and so the users can save their precious time. And this software also has a free version for all the users you can access it from the below. By using this demo version you can get an idea about its performance.

Working of SysInspire OST to PST Converter:-

  • After launching the tool in first screen tap on select OST file button.
ost file selection
  • Choose the OST file of which data you like to import into Office 365.
  • After selection you can see all the folder stored on OST file choose them and hit on Export to Office 365 button.
export ost to outlook 365
  • Now the tool will ask from log in details of your Office 365 account. Enter the credentials to login.
  • Then give name to the folder where you like to save OST file data and hit the convert button.

Therefore these are simple basics steps of the SysInspire OST to PST Converter for accessing OST file data into Office 365. Apart from this SysInspire tool also offers additional features for the user’s satisfaction.

You can also read this to fix OST File not Synchronizing common problems.

Features of SysInspire OST to PST Converter

  • Peform the OST file conversion into formats like HTML, EML, Office 365, MBOX, VCF, MSG and CSV.
  • Supports to convert all OST mailbox items like emails, journals, notes, appointments, tasks and many more.
  • Provide live email preview of OST file before starting the converison of OST file.
  • Supports to convert big sized OST file without any issue.
  • You will not see any modification in OST file all the email formatting and folder structures remain intact even after the conversion.


Because of various drawbacks of the manual method the best choice for the users is to go with the SysInspire OST to PST Converter. That provides the easy-to-understand steps to directly import OST file data in Office 365 without any risk. There are several other features that come in this automated tool that enhances the user experience.

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