To remove duplicate emails in Outlook without losing important data, start by reviewing your mailbox and identifying repeated messages before deleting anything. You can use Outlook’s built-in Clean Up feature to remove redundant emails from conversations, but always check the results carefully to avoid removing messages you want to keep. For large mailboxes or multiple PST files, the SysInfo Outlook Duplicate Remover provides a convenient way to identify duplicate emails based on selected comparison criteria. It allows you to preview mailbox folders, filter duplicate items by date range, and choose whether to move duplicates to a new folder, send them to the Deleted Items folder, or delete them permanently. You can also save the cleaned data as a new PST file, helping preserve your original mailbox as a backup. Before starting, create a backup of your Outlook data and verify the selected folders and duplicate criteria to reduce the risk of accidental data loss.
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