Whenever you set up an Exchange, IMAP, or Outlook.com account in Microsoft Outlook for Windows, an Offline Outlook Data File (.OST) is automatically created in a default location. This .OST file holds a local copy of your server mailbox items, allowing you to access emails and manage tasks even offline.
However, if a user mailbox is deleted from the server or an account is disabled, the OST file becomes orphaned and inaccessible. Unlike PST files, OST files can't be imported into another Outlook profile due to encryption with MAPI GUID EntryID.
Synchronization issues with the Exchange server, server downtime, power outages, Outlook crashes, or malware can also corrupt OST files. In these cases, trusted OST to PST converter software like EdbMails is essential. As IT professionals with years of experience in email data recovery, we've relied on EdbMails to extract emails, attachments, contacts, notes, tasks, journals, and more from damaged or orphaned OST files, saving them directly to PST, Office 365, or Live Exchange.
With no manual method to recover data from inaccessible OST files, EdbMails stands out as the premier solution. It restores mailbox items to Outlook or Exchange with minimal effort. Download and install it on a Windows PC meeting these proven system requirements:
| Component | Requirements |
|---|---|
| Windows OS | 7, 8, 10, 11 |
| Windows Server | 2003, 2008, 2008 R2, 2012, 2016, 2019, 2022 |
| Memory | 512MB min (4GB recommended) |
| Processor | Quad Core, 1GHz min |
| System Type | 32-bit (x86) & 64-bit (x64) |
| Disk Space | 20MB min |
The free trial lets you preview all items and convert up to 30 per folder. A license unlocks full OST to PST conversion, Office 365 imports, and multi-PC use.
EdbMails offers flexible pricing tailored to your needs, unlike one-size-fits-all competitors.
1. Download and install the EdbMails OST to PST tool.
2. Log in or select Free Trial.
3. Choose OST to PST from the dropdown.
4. Browse and select your OST file.
5. Select folders and click Export to Outlook PST.
6. Choose save location. The process completes with a log viewable via View Log.
OST files are robust but vulnerable to crashes, outages, or server deletions, rendering them orphaned. EdbMails excels in swiftly converting them to accessible PST with 100% accuracy—our go-to tool for reliable, professional recovery.
