What is an OFT file?
An .OFT file is an Outlook File Template created by Microsoft Outlook. Users save emails as templates to reuse standard formatting, text, and layouts. This saves time when sending recurring emails. The file stores the message body, subject line, recipient fields, and any attachments.
How to open OFT files?
The native way to open an .OFT file is by using Microsoft Outlook on Windows or macOS. Double-clicking the file usually creates a new email draft based on the template. If you do not have Microsoft Office installed, you can use specialized email viewers. Developers can also parse .OFT files using scripting languages like Python with libraries such as extract-msg, which handles Microsoft's internal OLE formatting.
Best practices and troubleshooting
Sometimes, an .OFT file will not open if your default email client is not set to Microsoft Outlook. If you receive an .OFT file and use a different email client like Mozilla Thunderbird or Apple Mail, you might need to convert the file to a standard .EML format first. Be cautious when opening .OFT files from unknown sources, as they can contain harmful attachments or malicious links.
Software and tools
The primary software for this format is Microsoft Outlook. Alternative solutions include desktop email viewers like FreeViewer OFT Viewer or SysTools OFT Viewer. For programmatic access, developers often rely on the Ruby library ruby-msg or the Python library extract-msg.
Summary
viewer.online/oft can analyze .OFT files to identify the exact format and creator software, inspect the file structure, extract readable text, and check whether an online preview is available. Since file extensions can occasionally have multiple possible meanings, viewer.online/oft will help you identify the actual format of your specific file. This makes it an essential tool to identify, inspect, and understand .OFT files without installing heavy software or dealing with compatibility problems.