I cannot access my old OST mailbox anymore is there any method to convert it into HTML

THOMPSON01

Member
May 10, 2025
127
1
18
I changed my system, and now Outlook is not recognizing my old OST mailbox. The file is important because it has project-related emails. I need a way to turn this OST into HTML so I can view everything on my browser.
 

sjax240

New member
Aug 28, 2025
4
0
1
Use the best MacMister Mac OST to HTML Converter, a perfect and complete solution to convert or import OST files to HTML format including emails, contacts, attachments, tasks, calendars, etc. No technical skill is necessary to operate the software.
 

Jacksonwillso

New member
Nov 19, 2025
8
0
1
Yes, you can still convert your old OST mailbox into HTML format even if you can no longer access it. TrustVare OST to HTML Converter is specifically handle such situations where OST files become inaccessible or disconnected from the original Outlook profile or Exchange server. The software allow you to convert OST mailboxes without requiring Outlook connectivity. The solution preserves original formatting and ensures a smooth error-free conversion process.