Oversized PST files are one of the primary reasons Outlook freezes, lags, or becomes corrupted, especially when users have years of accumulated mailbox data. Tools like SCANPST cannot handle such heavy corruption, and transferring data manually into a new PST file takes excessive time and often skips items. A more reliable way to repair Outlook data file in such cases is using SysInfo PST File Recovery, which efficiently repairs large PST files and restores their contents without compromising data integrity. The utility recovers all mailbox elements, including emails, tasks, calendars, contacts, and attachments, while keeping folder hierarchy intact. Dual scanning modes allow deeper analysis when the PST file is severely damaged, and the preview window makes it easy to validate recovered content before export. Users can also save recovered items into various formats like MBOX, EML, MSG, and DBX, or simply restore them back into a fresh PST. Extra features like Date Range filtering, error-handling capability, Outlook profile repair support, and bulk recovery add further convenience. Overall, the tool offers an effective blend of speed and precision for advanced corruption scenarios.