Friday 14th November 2025

BLR Tools

Email Conversion, How to

How to Convert OST to HTML File? Step by Step Guide

Shella Negs

Imagine you have all your important data in an OST file, but it is inaccessible to you. Frustrated right! To solve the issue is simple – convert OST to HTML file. This blog will guide you to instant and hassle-free solutions for OST to HTML conversion with complete data, including attachments.

How to convert OST emails to HTML File?  For the busy users, the quick answer i

  • If the OST file is connected to the Outlook profile, use the File >> Save as HTML option (one email at a time)
  • For complete conversion at once, use BLR OST Converter Tool.

At some point in time, you must want to know why HTML. Well, the answer is its nature.

What Makes HTML File Ideal for OST Conversion?

Converting OST emails into HTML has its own benefits, such as –

  • HTML opens on any browser without any hassle.
  • It saves emails with all attributes, including inline images, metadata, attachments, formatting, and more.
  • You can easily transfer/share an HTML file.
  • Since it is a single file, accessing or auditing makes it easy.

Without any further delay, let’s talk about OST to HTML conversion.

Method 1: Convert OST to HTML Using Outlook

If you were able to open OST file in Outlook, then follow the given instructions.

  1. Open the Outlook application on your system.
  2. Open the email that you want to export into HTML file.
  3. Click on File >>  Save As.
  4. In the new dialog box, name the file and browse location.
  5. At last, choosing HTML as a file type, hit the Save button.

Done! Here, complete the OST to HTML conversion process.

Not good for: orphan and damaged OST file,  bulk conversion.

Method 2: Convert OST Emails to HTML without Outlook

If your OST file – corrupted, damaged, inaccessible or created by another profile, then you can use the BLR OST Converter Software for conversion. This tool will convert your emails without affecting their integrity and formatting. With its simple and user-friendly interface, it is easy to complete the conversion without any hassle. The various benefits this tool offers –

  • Maintain folder hierarchy and structure
  • Date range filters for selective conversion
  • Folder selection options to convert important data
  • Convert emails along with attachments
  • Smart preview option before conversion
  • Free version of OST to HTML Converter for analysing

download-free -software

Steps to Export OST to HTML with Attachments

1. Run the BLR Tools for OST to HTML Converter.

2. Add the OST file.

3. View your OST file data before exporting it.

4. Choose the email folders you want to convert.

5. From multiple export options, choose HTML format.

6. Browse the targeted location and hit the Export button.

Done! Here, complete the OST to HTML conversion process. Now you can access the .html file in any system browser.

Tips: Point to Remember While converting OST to HTML format

  • Ensure there is sufficient space to save exported HTML files on your system.
  • While converting, don’t move, rename the OST file.
  • If the OST file is large, then break it into smaller folders.
  • Preview your OST file data before converting it.

Conclusion

Till here we have come across that if OST file is open in Outlook, then manual conversion is possible. However, if the OST file is orphan (most of the time), a conversion tool is needed. Here in this post, we discuss both the solutions. If there are a few emails and a connected OST file, then you can use the manual method; otherwise BLR OST Converter Tool will be helpful. Hope this post will be helpful for you.