Specifications
PST to Gmail Migration Tool — Technical Specs
System requirements, supported formats and trial limit for PST to Gmail Migration Tool.
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 & API Connectivity
Authentication Protocol Official Google OAuth 2.0 PKCE via browser consent
Supported Google Services Gmail REST API, Google Contacts (People API v1), Google Calendar (v3), Google Tasks
Mailbox Labels & Hierarchy System labels (Inbox, Sent, Starred, Drafts, Trash) and all nested custom user labels
Token Refresh Engine Automated background refresh token rotation prevents timeout during long overnight backups
Output & Archival Formats
Mail Container Formats Outlook Unicode PST (64-bit), EML (RFC 822), MSG (Compound Binary), EMLX, RFC-Clean MBOX
Document & Legal Formats Adobe PDF/A (ISO 19005-1 with Bates stamping), HTML5, MHTML, RTF, DOC, TXT, CSV, JSON
Contacts & Calendar Targets vCard (.vcf), CSV (Excel/Forensic table), iCalendar (.ics) for universal import
PST Output Splitting Auto-splits large output PST files at 2 GB, 5 GB, 10 GB, 20 GB, or 50 GB thresholds
Cloud Ingestion Destinations Microsoft 365 / Office 365 (via OAuth 2.0 PKCE), IMAP4rev1 servers (SSL 993)
Data Hygiene & Engine Performance
Deduplication Algorithm SHA-256 cryptographic hash calculated over RFC 822 Message-ID, Body, and Timestamp
Streaming Architecture Multi-threaded async pipeline with non-blocking rate limiter and jitter backoff
Resume Center Capability ACID-compliant local SQLite checkpoint database prevents re-downloading existing messages
Security & Data Handling
Data Privacy Boundary Processing runs on your computer. Data goes only to the mail provider or cloud destination you choose.
Credential Security Sign-in uses the Google browser consent screen, so the app does not ask for your Google password. An OAuth refresh token is stored on your computer to renew the session; access can be revoked in Google Account permissions
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