About MBOX2PST

We're the team behind MBOX to PST

We're Relief Software. We've been building tools for Microsoft Office and Exchange Server since 2001, helping people get more from the software they use every day.

Our work began with the practical problems we encountered alongside business customers: everyday tasks that took too many steps, and useful features that Outlook didn't include. We turned those needs into tools that people could use in their own workplaces and at home. Today, we bring that experience to MBOX to PST.

Keep your email useful when you move

Changing email apps shouldn't mean losing access to years of conversations. An old invoice, a project attachment or a message from someone important can still matter long after you leave the original mailbox behind.

We build MBOX to PST to help you bring that history into Outlook. Our converter turns mail saved from Thunderbird, Gmail or Apple Mail into an Outlook archive, keeping messages, attachments and folders together. You can browse it alongside your current inbox and return to it whenever you need an older email.

Your archive, on your computer

We designed our converter to work with saved mailbox files on your Windows computer. You choose the source and where to save the result. You don't need to upload your archive to us or share your email password to convert it.

You'll need classic Outlook installed on the same computer. Our getting-started guide walks you through the conversion, and our verification checklist helps you check the result before putting the original archive away.

We're here to help

Whether you're moving a personal archive or preparing mail for work, you can talk to our support team about setup, conversion or choosing a license. We also publish practical guides to help you find your mailbox files and plan the move.

Try it with your own mail

You can try the converter with a copy of your own mail before buying. We include MBOX to PST in our ReliefJet Essentials installer; select Convert MBOX to PST after installation. See license options for trial limits and purchase details.