Method 1: Using Outlook (Manual Export)
Step 1: Open OST File in Outlook
Launch Microsoft Outlook.
If the OST file is already connected to an Exchange account, it will load automatically.
If not, configure the Exchange account again to sync the OST data.
Step 2: Export Emails to HTML
Select the emails/folders you want to export.
Go to File > Save As.
Choose HTML (*.html) as the file format.
Save the file to your desired location.
⚠️ Limitations:
Only works for individual emails (not bulk conversion).
Does not convert contacts/calendar entries to HTML.
Method 2: Using Third-Party OST to HTML Converter Tools
For batch conversion of OST files to HTML, specialized tools like SysTools OST Converter, Stellar Converter for OST, or Aryson OST to PST Converter can be used.
Steps:
Download & Install a reliable OST to HTML converter.
Load the OST File into the software.
Select HTML as Output Format.
Choose Destination Folder.
Start Conversion.
✔ Pros:
Converts entire OST (emails, contacts, calendar) to HTML.
Preserves formatting, attachments, and metadata.
❌ Cons:
Most reliable tools are paid (free versions have limitations).
Method 3: Convert OST to PST First, Then to HTML
If you need more control, convert OST → PST → HTML.
Step 1: Convert OST to PST
Use Microsoft ScanPST (for minor repairs) or third-party tools like Kernel OST to PST Converter.
Open the PST file in Outlook.
Step 2: Export PST to HTML
Use Outlook’s Save As option (as in Method 1) or a PST to HTML converter.
Method 4: Using MBOX Conversion (Alternative)
If you can convert OST → MBOX (via tools like LibreOffice or Thunderbird), then use an MBOX to HTML converter.
Best Free & Paid Tools for OST to HTML Conversion
Tool Free/Paid Features
SysTools OST Converter Paid (Trial Available) Batch conversion, HTML/PDF output
Stellar OST to PST Converter Paid Recovers deleted emails, HTML export
Aryson OST to PST Converter Paid Supports large OST files
Outlook’s Built-in Export Free Manual, single emails only
FAQs
❓ Can I convert OST to HTML for free?
Yes, but only manually (one email at a time) via Outlook. Bulk conversion requires paid tools.
❓ Does HTML conversion preserve attachments?
Yes, if using a professional converter. Manual saving may require attaching files separately.
❓ Can I convert OST to HTML without Outlook?
Yes, using third-party tools that don’t require Outlook installation.
❓ How to view OST files in a browser?
Convert to HTML first, then open in Chrome, Firefox, or Edge.
Final Verdict
For single emails → Use Outlook’s Save As HTML.
For bulk conversion → Use SysTools/Stellar Converter.
For free alternatives → Convert OST → PST → MBOX → HTML.
🔗 Recommended Tool: SysTools OST Converter (Paid but reliable).
https://spotipremiumapks.com.mx/
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