How to Convert OST file to PST in Outlook 365?

Are you looking to convert OST file to PST in Outlook 365? If yes, then you are on the right page. Here in this article, we have described the best automated method for converting OST to PST files.

Overview

Microsoft Outlook is a popular email client. MS Outlook uses two types of file formats – OST and PST. 

OST files usually store emails, contacts, calendars, tasks, notes, etc in the offline mode and sync the changes done by a user offline with the Exchange server when the internet connection is established. 

PST files store data like emails, contacts, calendars, tasks, notes, etc, permanently, and these files do not sync with the Exchange server. These files are usually used to back up Outlook data items and are used to transfer data items from one computer to another computer.

Note: Before converting OST  to PST files, you have to configure your Outlook 365 to desktop Outlook.

Best software to convert OST file to PST in Outlook 365

The best software to convert OST to PST files is eSoftTools OST to PST Converter software. This software allows you to do the bulk conversion and migration of OST files to other file formats without data alteration and data loss. This software can convert OST files to other file formats like EML, EMLX, HTML, PST, MBOX, MSG, and vCard with a few clicks.  It also enables the conversion of corrupted OST to PST files with ease.

Key features

• Can convert bulk OST, PST  and NST files to other multiple file formats.
• Easily recover & convert OST files obtained from applications like Office 365, Outlook.com, IMAP and Exchange Environment.
• Includes all the data items of Outlook, like emails, contacts, calendars, tasks, notes, etc, for conversion.
• Solves the problem of oversized PST files by splitting them into smaller PST files before conversion of OST to PST.
• Capable of exporting and recovering email messages in plain text, RTF, TXT, and HTML format with embedded images. 
• Filter emails according to Date by selecting a Date Range(From and To).
• Provides the feature of saving emails with unique names in the Naming convention option.
• Don’t alter the status of emails while conversions such as Read and Unread emails.
• Easily migrates OST files to cloud-based applications like Office 365, Gmail, Outlook.com, and IMAP accounts.

Also Read: How to Convert OST to PST in Outlook 2016?

Steps to convert OST to PST file

• Download and install eSoftTools OST to PST Converter Software.
• Click the Select OST button to add OST files to the software.

• Choose a conversion mode from the available options: –
  • Single OST file conversion: Select one OST file from the system for conversion.
  • Bulk OST file conversion: Select multiple OST files from the system for conversion.

• Load the OST files into the software and click the Start Scanning button.
• Preview OST files/folders containing- emails, contacts, calendars, tasks, notes, etc. and select the needed files/folders for conversion. 

• Click on the Convert button on the above menu bar and choose the PST option for the conversion options list.
• You can check the split PST option and split the PST file into smaller PST files by choosing from the pre-determined 8 alternative sizes options available.
• If you want to apply the email filter option you can apply it will filter emails according to Date by mentioning Date Range(From and To). 
• Press the Browse button and choose the location where you want to save the converted PST files.

• Click the Convert button and begin the OST to PST file conversion process.

Conclusion

In this blog, we have explained the best-automated method to convert OST file to PST in Outlook 365. There are manual methods also available but they have some drawbacks. The automated method is best, reliable, 100% accurate and converts OST to PST files without data loss.