MacSonik OST to PST Converter - 2026 Pricing, Features, Reviews & Alternatives

MacSonik OST to PST Converter is a software application engineered for the conversion and migration of Microsoft Outlook OST files into PST and a wide array of alternative formats. It is intended for business environments and technical professionals managing email system transitions, data archiving, and cross-platform migrations. The solution delivers comprehensive support for multiple output types and preserves the original folder hierarchy and email metadata throughout the conversion cycle.

The application provides batch processing capabilities that enable the simultaneous handling of numerous OST files without compromising data integrity. It offers a date range filter for selective conversion based on defined time intervals. A preview panel displays email subjects, dates, sender information, and attachments in a tree-structured view prior to processing. Duplicate email removal is available based on fields such as To, From, Bcc, Cc, and Subject. An auto-split function divides large PST files into smaller units to prevent file corruption and improve manageability. The software permits the extraction of attachments to a separate folder or conversion with attachments intact. Custom output file names and destination paths can be configured for organized storage.

Migration to various email clients is supported through direct export functions for platforms such as Gmail, Office 365, Yahoo Mail, Thunderbird, AOL, IMAP, Hotmail, Zoho Mail, and iCloud. Original mailbox structures remain intact during the transfer. The application operates independently of Microsoft Outlook and does not require client installation. Compatibility extends to macOS releases from Ten point thirteen High Sierra through Fourteen Sonoma and to all major Windows editions. The solution supports Apple Silicon processors including M one, M two, M three, M four, and M five. System memory requirements begin at four gigabytes with eight gigabytes recommended for optimal throughput.

Security features maintain data integrity throughout conversion and migration activities. Modern authentication support for Office 365 workflows requires administrator consent for organization-wide resource access and enabled user sign-in permissions for token generation. Technical support is available around the clock to address operational inquiries. The software does not depend on external integrations or application programming interfaces and maintains a standalone architecture to safeguard procedure continuity.