Specifications
PST to IMAP Migration Tool — Technical Specs
System requirements, supported formats and trial limit for PST to IMAP 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 Input Compatibility
Supported File Extensions .PST, .OST (ANSI & Unicode), .NST, .BAK
PST Architecture Support 32-bit ANSI (Outlook 97-2002) & 64-bit Unicode (Outlook 2003-2021 / O365)
Header Corruption Recovery B-Tree raw sector recovery for damaged or truncated headers
Outlook Profile Auto-Detect Scans Windows Registry for registered MAPI profiles automatically
Output & Destination Protocols
Cloud Streaming Protocols Microsoft Graph API (O365), Google Gmail REST (OAuth 2.0 PKCE), IMAP4rev1 (SSL/TLS 993), EWS
Document Export Formats Adobe PDF 1.7, HTML5, MHTML, RTF 1.5, DOC (Word XML), TXT (UTF-8), JSON, CSV
Mail Container Formats EML (RFC 822/2822), MSG (Compound Binary), MBOX (MBOXO/RDFA), EMLX, PST
PST Output Splitting Auto-splits large output PST files at 2 GB, 5 GB, 10 GB, or 20 GB thresholds
Attachment Handling Embed in document, extract to sub-folder, or skip by size threshold (MB)
Data Hygiene & Engine Performance
Deduplication Algorithm SHA-256 cryptographic hash calculated over email Body + Sender + Sent Date
Multi-Threading Engine Asynchronous multi-worker parallel thread pool scaling across available CPU cores
Session Checkpointing Pauses & resumes interrupted jobs without re-processing exported items
Security & Forensic Compliance
Cloud Authentication OAuth 2.0 PKCE Authorization Code Grant
Data Privacy & Telemetry 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