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Exporting Exchange Online Mailbox, Folders or Messages to PST or CAB

You can export folders or messages to an export set, change the format of the items to fit your needs, and download the exported PST or CAB file directly to your browser. When you export, an export set is automatically created.

The following file formats are supported when you export:

  • PST (Portable Storage Table)

  • CAB (cabinet file)

The default maximum size of export to PST or CAB is 25 GB. The size limitation applies to the total size of emails exported from the Office 365 client.

Important

  • When the export size exceeds 25GB or 50 items, the export job does not start and an error message occurs. You can use the restore option or create multiple, smaller export sets.

  • When multiple mailboxes are exported to a PST file, all the emails are exported from all the mailboxes into a single PST file.

  • The export sets you create are restricted to you. They will not be accesible to other users.

  • To export email data, you will need a Windows Web Server. Exporting email data is not supported on Linux Web Server.

  • You must install and use Microsoft Office 2013 64-bit version or any higher 64-bit version of Microsoft Outlook.

Exporting Mailboxes, Folders, and Messages

  1. From the navigation pane, go to Protect > Office 365.

    The Office 365 Overview page appears.

  2. On the Apps tab, click the app.

    The Overview page of the app appears.

  3. On the Mailboxes tab, select a mailbox or All public folders, and then at the right area of the page, click Restore > Restore messages.

    Contents for the mailbox or all public folders appear.

  4. From the list, select the items that you want to restore.

    You can use the Search bar to filter mailbox contents and find the items you want restore.

    To include deleted items in the export file, click the action action_button button, and then select Include deleted items.

  5. At the top of the page, click Export.

    The Export options dialog box appears.

  6. In the Export Name box, enter a name for the export set.

  7. If you selected individual messages, beside Selection Range, select the email messages to include in the export set:

    • To include only the selected email messages, click Selected emails only.

    • To include all emails, select All emails without the sub-folders.

  8. Beside Export type, select CAB or PST.

  9. Beside File format, select EML or MSG.

  10. To maintain the folder hierarchy in the exported file, under Advanced select Retain folder hierarchy.

  11. Click Export.

    A job runs to create the export set.

Viewing and Managing Exports

  1. In the upper-right corner of the page, click View exports.

    The View exports dialog box appears. The export sets that are ready to be downloaded and the export sets that are being created are listed.

  2. To download the export set, select the check box for the export set, click the action action_button button, and then click Download.

    When mailboxes are exported, the folder hierarchy is maintained in the export set.

  3. To delete an export set:

    1. Select the check box for the export set, click the action buttonaction_button, and then click Delete.

    The Confirm delete dialog box appears.

    1. Click Yes.

  4. To edit the retention period for an export set, do the following:

    1. If the retention period is not visible in the table, click the Show/hide column button in the table header row, and then add the Retention (in days) column.

      The Retention (in days) column is added to the table.

    2. In the row of the export set, click the action buttonaction_button, and then select Edit retention.

      The Edit retention dialog box appears.

    3. Select a specific date in the Retain until section, and then click Submit.

      The default retention is 30 days and can only be extended by 30 more days.

  5. To view the items that failed, select the check box for the export set, click the action button Sharing a Mailbox or a Folder Using Exchange Mailbox (1), and then select View failed items.The failed items can be resubmitted for export.

  6. To include chain of evidence reporting in the downloaded zip file, click Download Manifest. The Download Manifest option includes a digital signature (MD5 digital hash) and all of the content files and email messages in the export set.

    You can only view or download the manifest when the status of the item in the export set is Available for Download.

    You must import the PST file into Outlook to view the contents of Contacts, Calendars, and Notes inside Outlook. These items are not visible if you just open the PST file from Outlook.

Viewing Export Sets from the Monitoring Tab

You can also view and manage the exports that you create from the Monitoring tab within the app.

  1. From the navigation pane, go to Protect > Office 365.

    The Office 365 Overview page appears.

  2. On the Apps tab, click the app.

    The Overview page of the app appears.

  3. On the Monitoring tab, select the Exports tab.

    The export sets that are ready to be downloaded and the export sets that are being created are listed. You can view the failed items, delete the export set or edit the retention of the export set from here.

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