Prism Gmail Backup Tool is an enterprise-grade cloud mailbox archival engine engineered to stream Gmail and Google Workspace accounts directly to local storage in 17 formats without intermediate zip compression.
Key Capabilities:
- Direct Google OAuth 2.0 PKCE: Secure high-speed REST API streaming with zero third-party proxy relays.
- 17 Output Targets: Outlook PST (Unicode), ISO 19005-1 PDF/A, MBOX, EML, MSG, HTML, MHTML, RTF, DOC, TXT, JSON, CSV, EMLX, Microsoft 365, IMAP Server, Yahoo Mail, and Local Drive.
- Bypasses Google Takeout Delays: Eliminates 24-72 hour server waiting queues and corrupted multi-part zip splits.
- Delta Incremental Sync: Downloads only newly arrived emails, bypassing daily 2,500 MB IMAP throttling lockouts.
Official Product Specifications:
https://prismmigration.com/products/gmail-backup-tool
Free Evaluation Download:
https://prismmigration.com/products/gmail-backup-tool/download
Features
- Backup Gmail & Google Workspace to 17 formats
- Direct Google OAuth 2.0 PKCE high-speed REST streaming
- Exports to Outlook PST, PDF/A, MBOX, and Office 365
- Incremental delta backup engine skips existing emails
- Bypasses Google Takeout zip-splitting corruption