Managing personal Outlook.com account settings, security, and privacy
Hello felix brisebois,
I understand you need your old purchase emails to recover your hacked Epic Games account.
If those emails were permanently deleted years ago, unfortunately, they cannot be restored through Outlook.com once the recovery period has expired.
That said, Epic Games doesn't necessarily require the original purchase emails to submit an account recovery request. You can also provide previous email addresses, display names, or linked gaming accounts.
Official Epic Games account recovery instructions
You can try that route even without the original receipts, although Epic Games will ultimately determine whether ownership can be verified.