Email Recovery

How to Restore Old PST Emails in Outlook for Mac

WPS Editor Oct 7, 2026 869 views

Question details

The user needs to recover older email messages from a backup PST file that disappeared from Outlook for Mac following an Office update.

How to Restore Old PST Emails in Outlook for Mac

Product: Outlook
Device & OS: Mac
Scenario: Accessing archived or backed-up emails in a local PST file after an application update.
Observed behavior: Older messages from the PST file are missing in both the Outlook for Mac desktop client and Outlook on the web.

Before you start

Locate your original PST backup file on your Mac and create a safe copy of it in a different folder to prevent accidental data corruption during the import process.

Solution 1Recommended

Re-import the PST File into Outlook for Mac

Since the PST file contains local data, re-importing it will restore the messages directly to your Outlook for Mac client.

Local PST files store emails directly on your device rather than on the mail server. Because they are not synced, these emails will naturally not appear in Outlook on the web unless you manually upload them to your server mailbox after importing.

Verify Account and Data

Confirm that the email account using your domain is properly configured in Outlook for Mac and that you have located the correct backup PST file.

Open the Import Menu

Launch Outlook for Mac, navigate to the top menu bar, click on 'File', and select 'Import' from the dropdown list.

Select File Type

Choose 'Outlook Data File (.pst or .olm)' and click the right arrow to continue.

Import the Data

Select 'Outlook for Windows Data File (.pst)', locate the backup PST file on your Mac, and click 'Import'.

Access Restored Emails

Once the import is complete, check the 'On My Computer' section in your folder pane to view and access the restored email messages.

Re-import the PST File into Outlook for Mac

Web Access Limit: Messages stored in a local PST file will not appear in Outlook on the web. To view them online, you must drag and copy the imported folders into your active Exchange or IMAP server mailbox within the Outlook client.

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Frequently Asked Questions

Why are my PST emails not showing up in Outlook on the web?

PST files are local data files stored strictly on your computer's hard drive. Because they are not synchronized with your cloud email server, the web version of Outlook cannot access or display them unless you manually move the emails from the PST folder into your active server mailbox.

Can I open a Windows Outlook PST file on a Mac?

Yes, Outlook for Mac supports importing .pst files created in Outlook for Windows. You can use the Import feature under the File menu to bring this data into your Mac client, where it will be stored under the 'On My Computer' section.

What should I do if my PST file fails to import into Outlook for Mac?

Ensure the PST file is not currently open in another program and that you have full read permissions. It is highly recommended to copy the PST file to your Mac's desktop or Documents folder before importing to avoid permission issues commonly associated with external drives.

Migration & Recovery