GMvault vs Spanning Backup

GMvault backs up Gmail accounts to help preserve email correspondence and can restore a local email repository to Gmail. It offers full synchronization as well as incremental quick synchronization. The tool runs from the command line and is described as user-friendly. XOAuth is enabled by default as the recommended sign-in method; its token is stored in $HOME/.gmvault after first authentication. Users can alternatively sign in with a Gmail password, which is encrypted if they choose to save it. Emails are stored by default in $HOME/gmvault-db, or %HOME%/gmvault-db on Windows. Restore operations include --resume and --restart options for avoiding re-upload of emails already processed. GMvault is free and open source under GNU-AGPL-3.0, with Linux, macOS, and Windows support. The project documents binary installs for those systems and installation from source through Python setup.py, pip, or easy_install. PyPI lists version 1.9.1, published March 31, 2016.

Spanning Backup provides cloud backup and recovery for Microsoft 365, Google Workspace and Salesforce. It runs daily automated backups and supports item-level recovery, including granular and point-in-time restores for administrators and end users. Google Workspace coverage includes Gmail, Google Drive and Shared Drives, Calendars and Contacts. Microsoft 365 coverage includes Exchange Online, SharePoint Online, OneDrive for Business and Microsoft Teams. Salesforce protection covers records, metadata, attachments, customizations and messages. Spanning describes unlimited backup retention, including an unrestricted policy for Microsoft 365, and offers a single all-inclusive plan with no tiers and volume pricing available. The service lists ransomware protection and audit logs. Its security measures include OAuth 2.0, object-level 256-bit AES encryption at rest and TLS encryption in transit. A 14-day trial includes unlimited backup and restore, but installation requires administrator status. Pricing is available on request.