OST to PST Converter

This OST to PST converter ingests OST files and exports a standard PST file suitable for import into Outlook or other clients. It targets IT admins, helpdesk professionals, and users facing mailbox access after OST damage or account migration. The tool preserves mailbox data structures including emails, attachments, calendars, contacts, and tasks, and exports them into a single PST file or multiple PSTs when configured. It does not require Outlook to be installed on the hosting system.
Conceptually, the tool parses the OST data model, maps items to PST folders, and writes items with their metadata and attachments into PST containers while optionally splitting by size. It supports recovery mode for mildly corrupted OSTs and allows selective export by date range or folder. The result is a portable PST that can be imported into Outlook or compatible clients, enabling continuity, archiving, and migration workflows.
Who benefits includes IT teams performing data migration, end users migrating to new accounts, and organizations needing offline access or legal holds. Unique value lies in a serverless, file-based workflow, no dependency on Outlook, and flexible export options (split, date filtering, password protection). Core features include file upload, robust OST-to-PST mapping, optional split by size, and a ready-to-import PST bundle for business continuity. Use cases cover archiving, data recovery from OST, and mailbox migration to Exchange or Office 365.
Edge cases include heavily damaged OST files reducing success, very large attachments inflating PST size, or password-protected OSTs requiring credentials. It does not export non-mail items like rules or views, and it cannot guarantee perfect fidelity for all MAPI properties.