Hacker destroyed my emails

Because you regained account access but older messages remain missing, recovery now depends on whether those messages still exist in a folder, recoverable storage, or a separate copy. Their original dates do not determine the recovery window; the deletion date does. Using Outlook.com in a desktop browser, search all folders, including Archive, then open Deleted Items and select Recover items deleted from this folder. Restore anything available there. Microsoft documents 30-day retention in Deleted Items and a 30-day recovery period for items removed from it, so messages deleted months ago may already be permanently unavailable. Since you already checked rules, also verify forwarding, account security information, and recent sign-in activity. Check any older computer or exported mail archive for independent copies before synchronizing or deleting them. Contact Microsoft support about the missing mail, but neither this forum nor the documented recovery process guarantees restoration from historical server backups.