Stellar Converter for OST is a highly recommended tool to convert inaccessible OST files to PST files. It guarantees 100% accurate recovery of all mailbox data, including deleted items. Recommended by Microsoft MVPs and IT administrators, it is a powerful tool for data recovery.

This software preserves the original structure of mailbox data and enables the user to sort and organize the emails based on parameters such as Date, From, To, Subject, Type, and more. Even when dealing with encrypted or password-protected OST files, Stellar Converter performs flawlessly.
With its enhanced mailbox preview feature, users can view the contents of a folder, email, or other items, and verify and save specific items from the OST to supported formats. Not only can the mailbox data be extracted in PST format, but also in multiple file formats such as MSG, EML, RTF, HTML, or PDF, making it readily available for use in different applications.
Stellar Converter for OST also maintains a DAT file to save the ‘scan’ information for an OST file, which can be loaded later to reinitiate the OST to PST conversion process. The advanced filters allow users to include or exclude mail items based on a date range, email address, or even the Junk Email or Deleted Items folders.
The software offers an auto-splitting feature to keep the PST file size smaller and safeguard it against corruption when saving files larger than 45 GB. Moreover, the Save and Load Scan feature allows users to perform the procedure at different times or on different machines.
Overall, Stellar Converter for OST is a reliable software that efficiently handles large-sized OST files, offers multiple file format options, preserves mailbox data structure, and comes with advanced filters, preview, and auto-splitting features.
Version 13.0.0.0:
Supports OST files size more than 50 GB
Support for Windows 11 & MS Outlook 2021
Version 12.0.0.0:
Supports OST files size more than 50 GB
Support for Windows 11 & MS Outlook 2021