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Microsoft Outlook’s Junk Email functionality works best when you train it by adding senders to the Safe Senders and Blocked Senders lists. Here’s how to export those lists and reimport them to a new machine or account.

This functionality is only available in the Microsoft Outlook desktop app. If you’re using Outlook Online, then the Safe Senders and Blocked Senders data will sync up with the Outlook client. You can only import and export them through the desktop application.

In Microsoft Outlook, click Home > Junk > Junk E-mail Options.

Outlook's "Junk E-mail Options" menu option.

You’ll need to export Safe Senders and Blocked Senders separately. Open the “Safe Senders” tab and click “Export to File.”

The "Safe Senders" tab and the "Export to File" button.

This will open a standard file dialogue for you to save the file somewhere on your computer. Choose a location, type a name for the file, and save it.

Now open the “Blocked Senders” tab and click “Export to File.”

The "Blocked Senders" tab and the "Export to File" button.

As with Safe Senders, this will open a standard file dialogue for you to save the file somewhere on your computer. Choose a location, a name for the file, and save it.

You should now have two TXT files that you can import into a new account or Microsoft Outlook that’s installed on a different computer.

Two text files containing the sender data.

Importing those files is as simple as exporting them. Head back to the Junk Email Options menu by clicking Home > Junk > Junk E-mail Options in the Microsoft Outlook desktop app. To import the Safe Senders file, open the “Safe Senders” tab and click “Import from File.”

The "Safe Senders" tab and the "Import from File" button.

To import the Blocked Senders, open the “Blocked Senders” tab and click “Import from File.”

The "Blocked Senders" tab and the "Import from File" button.

The import will add any senders to the existing lists, rather than overwrite the existing entries. This means that you and your colleagues can share your exported files, particularly for the Blocked Senders, to help each other build up better Junk Email filtering.

Rob Woodgate Rob Woodgate
Rob Woodgate is a writer and IT consultant with nearly 20 years of experience across the private and public sectors. He's also worked as a trainer, technical support person, delivery manager, system administrator, and in other roles that involve getting people and technology to work together.
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