PST to MBOX

If you have Outlook storage files that you need to view, store, or process in Thunderbird, Apple Mail, or a Linux-based email client, just convert them into a compatible format with Aspose.Email Apps in a few clicks. We offer a free PST to MBOX converter that you can use online without installing any software and get immediate results.

About the Application

The tool you are going to use is a web-based application created to transform Microsoft Outlook data files into an MBOX format that works across different platforms. Built on the reliable Aspose.Email engine, it keeps your emails exactly as they were — preserving attachments, formatting, headers, and even custom Outlook fields.

What makes this converter special is its attention to detail. Email threads, inline images, embedded objects, and metadata are all carefully preserved. The final output will work well in your preferred email environment.

You can be sure of the privacy of your actions and data. Files are stored securely in encrypted cloud storage, never shared with anyone, and deleted automatically within 24 hours. Only you have access to the download links. For organizations with stricter security needs, we also offer offline SDKs and on-premises solutions that keep all data fully under your control.

The conversion runs entirely in the cloud. Thus, you don't need to perform any installation or complicated setup. Just upload your PST file, click Convert, and download the resulting MBOX file or a ZIP archive if you’ve converted multiple files at once. It’s quick, efficient, and it saves you time. Please, mind that smaller files can be processed by free users right away, while larger uploads are available with a simple upgrade. And we can arrange custom terms for special requirements.

Got Questions?

Check out our developer forum monitored by the team daily. There you can report a bug, request a new feature, or ask a use-case-specific question. We’re here to help.