Specifications
PST to MBOX Converter — Technical Specs
System requirements, supported formats and trial limit for PST to MBOX Converter.
System Hardware & OS Support Matrix
Operating System Windows 11, Windows 10, Windows 8/7 (x64)
Processor / CPU See the download page for current requirements
Memory (RAM) See the download page for current requirements
Disk Installation Space See the download page for current requirements
Deep Architecture Specifications
Source Input Compatibility
Supported File Extensions .MBOX, .MBX, .MBS, .EMLX, Google Takeout .ZIP / .TGZ, Apple Mail Bundles
MBOX Dialects & Variants Unix RFC 4155, mboxrd (Thunderbird), mboxo (Takeout), mboxcl, mboxcl2, Eudora CRLF
Directory Tree Reconstruction Recursive scanning of Thunderbird .sbd folder trees and .msf index caches
Client Profile Auto-Detect Auto-detects Mozilla Thunderbird, Apple Mail, Postbox, Eudora, and Opera Mail installations
Output & Destination Protocols
Cloud Ingestion Protocols Microsoft Graph API (M365 OAuth 2.0 PKCE), Google Workspace Admin SDK, Gmail REST, IMAP4rev1 (SSL 993)
Document & Legal Formats Adobe PDF/A (ISO 19005-1), HTML5, MHTML, RTF, DOC, TXT (UTF-8), JSON, CSV (Forensics)
Mail Container Formats Outlook Unicode PST (64-bit), EML (RFC 822), MSG (Compound Binary), EMLX, RFC-Clean MBOX
PST Output Splitting Auto-splits large output PST files at 2 GB, 5 GB, 10 GB, 20 GB, or 45 GB thresholds
Attachment Retention Embed in PDF portfolio, extract to disk sub-folder, or filter by file extension/size threshold
Data Hygiene & Engine Performance
Deduplication Algorithm MD5 / SHA-256 cryptographic hash calculated over RFC 822 Message-ID, Body, and Timestamp
Processing Architecture Multi-threaded Producer-Consumer pipeline scaling linearly across all available CPU cores
Resume Center Capability ACID-compliant local SQLite checkpoint database automatically skips previously ingested items
Security & Forensic Compliance
Cloud Authentication OAuth 2.0 PKCE Authorization Code Grant & P12 Service Accounts
Data Privacy Boundary Processing runs on your computer. Data goes only to the mail provider or cloud destination you choose.
Supported Source & Target Formats
Input Source Formats (0)
Input formats and direct connection sources are documented in the product guide.
Output Target Destinations (0)
Export destinations and target profiles are documented in the product guide.
Free trial limit
50 items per folder
The free trial exports up to 50 items per folder so you can verify conversion fidelity before purchasing.
Download Free Trial
Test performance on your hardware with a 50-item preview export limit.
Download Trial Installer