Sysinfo OST to PST Converter Tool
Convert OST to PST and 12+ formats without Outlook, with bulk processing, data filtering, duplicate removal, attachments, and folder hierarchy preservation.
About
SysInfo OST to PST Converter is a professional email conversion and migration software designed to convert Outlook OST files into PST and multiple other formats without requiring Microsoft Outlook or an active Exchange profile. It helps users access, export, back up, and migrate mailbox data from healthy, orphaned, password-protected, and oversized OST files.
The software supports conversion of OST files into PST, MBOX, EML, MSG, PDF, CSV, DOCX, JSON, MD, ICS, VCF, PNG, and other supported formats. It can export complete Outlook mailbox data, including emails, attachments, contacts, calendars, tasks, notes, headers, metadata, and folder structures. During conversion, the original folder hierarchy, timestamps, email properties, and available metadata can be preserved.
SysInfo OST to PST Converter supports both single-file and bulk OST processing. Users can load multiple OST or PST files manually, select folders, or use drag-and-drop functionality to process large batches. This makes the software suitable for IT administrators, businesses, consultants, and users handling multiple mailboxes during Exchange decommissioning, employee offboarding, data recovery, or email migration projects.
The tool includes a detailed preview system that allows users to examine mailbox content before conversion. Users can review emails, attachments, contacts, calendars, tasks, notes, headers, MIME data, and RAW HTML. Search and advanced search options can help locate specific mailbox items before exporting them.