If Outlook search not showing all results, the issue is often linked to corruption or damage in the Outlook PST file rather than the emails being deleted. PST files can become corrupted due to large file size, malware infections, unstable network connections, or sudden system shutdowns. When this happens, Outlook may still open the mailbox but cannot properly read or index all email items such as emails, calendars, contacts, or tasks, which causes incomplete search results. In many cases, the Inbox Repair Tool (ScanPST.exe) is unable to recover all data or fails to resolve PST alignment and header errors. According to the provided content, tools like Sysinfo PST File Recovery are used in such scenarios to recover mailbox data from corrupt, encrypted, or password-protected PST files, while maintaining folder hierarchy and supporting large PST files without size limitations. Recovering inaccessible data helps restore missing items so Outlook search can display complete results again.
Read more: https://www.sysinfotools.com/blog/outlook-search-not-showing-recent-emails/