Sending, receiving, and organizing email in Outlook.com
Thanks for confirming, Mily. Since it’s an old Outlook.com account and the emails were deleted more than 30 days ago, they’re permanently removed and can’t be recovered. Outlook.com only keeps deleted messages for up to 30 days, even if the deletion wasn’t intentional.
You can still sign in at outlook.com and check Deleted Items, then select “Recover deleted items” to be sure. After that period, there’s no option to restore them. For the future, try using the Archive feature or export important emails to a file on your computer to keep them safe.