When you accidentally delete an item from your Outlook mailbox, you can often recover it. The first place to look is the Deleted Items or Trash folder. Search for the item you want, right-click it, and then select Move > Other Folder.
If you can't find the item there, the next steps depend on which type of email account you have in Outlook. View the Microsoft help article for further assistance, Recover deleted items in Outlook for Windows
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