Recover deleted items or email in Outlook Web App
https://support.microsoft.com/en-us/office/recover-deleted-items-or-email-in-outlook-web-app-c3d8fc15-eeef-4f1c-81df-e27964b7edd4
WEBOutlook Web App. When you accidentally delete an item from your mailbox, you can often recover it. The first place to look for a deleted item, such as an email message, calendar appointment, contact, or task is the Deleted Items folder.
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