OST Recovery Tool (2026 Enterprise Edition) Frequently Asked Questions

Yes. Prism OST Recovery Tool is specifically designed to open and extract all data from orphaned OST files even after the associated Exchange, Office 365, or IMAP account has been deleted or decommissioned.

No. The software features an independent low-level .NET 8 B-Tree parser that repairs and extracts OST files directly from disk without requiring Microsoft Outlook or Exchange Server.

Yes. The deep physical sector scanner carves unallocated B-Tree database blocks to recover hard-deleted emails and items that were emptied from the Deleted Items folder.

Prism OST Recovery Tool reads large OST files in chunks instead of loading the whole file into memory. No maximum size is documented here; test your own file in the free trial.

The free evaluation version allows you to scan and preview all recovered items, with a conversion limit of 50 items per folder. Purchasing a license removes all limits.

Following successful payment, your digital license key is delivered to your billing email address. If you need your key resent or require assistance with activation, you can contact our team anytime via our Contact Support page.

We provide free evaluation versions for all tools so you can test compatibility and conversion fidelity on your own data before buying. If you encounter a verified technical limitation or defect that our engineering support team cannot resolve, purchases are covered under the terms detailed on our Refund Policy page.