Sync and back up your calendar events with Plakar

Import and export your calendar data from any CalDAV-compatible server using Plakar. Events are securely stored in `.ics` format and can be restored or synced back at any time.

CalDAV is a protocol that allows clients to access and manage scheduling information on a remote server. It’s supported by popular providers like Fastmail, Nextcloud, iCloud, and Google Workspace (via third-party gateways).

Back up your calendar with Plakar

Plakar’s CalDAV integration lets you import and export calendar events to and from your Plakar repository. It supports any CalDAV-compatible provider and preserves events in full fidelity using the .ics format.

Use it to archive your schedule, sync events between systems, or push them back to your calendar server with no data loss.

Why back up CalDAV calendars?

Calendars often contain critical personal or work-related data, but most providers offer limited options for long-term backups or restorations. Plakar gives you:

  • Full snapshot history of your calendar
  • The ability to recover deleted or modified events
  • A secure and encrypted archive that works across providers

Supported features

  • Import from any CalDAV server (Nextcloud, Fastmail, iCloud, etc.)
  • Export .ics files from Plakar back to the calendar server
  • Support for multiple calendars in one operation
  • Secure authentication (supports app passwords)
  • Round-trip support with no data loss
  • Preservation of metadata including:
    • Event title, time, recurrence rules
    • Attendees, organizer, UID, creation timestamps

Limitations

  • All accessible calendars and events are synced; per-calendar selection is not yet supported
  • Export may fail if your account is read-only or lacks write permissions
  • Events must be stored in Plakar in .ics format to be exported
  • Does not yet support partial or time-based filtering
  • Services requiring OAuth2 (like Google Calendar) are not supported directly; fill the OAuth2 provider configuration to use a third-party gateway

For usage details, see the configuration guide

Threats mitigated

  • Loss of events due to accidental deletion
  • Calendar corruption or sync errors
  • Locked-in provider limitations (e.g. platform shutdowns)
  • Incomplete manual exports

Questions and support

Need help or want to report a bug?
Open an issue on GitHub
Join our Discord to get support from the team and community

Ready to protect your MinIO data?

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Security by design

Reduce your attack surface by keeping encryption keys out of storage. With true end-to-end encryption, your data is protected before it leaves the source and remains unreadable even to your storage provider.

  • End-to-end encryption with modern crypto (no compromise on "at-rest/in-transit")
  • Immutable snapshots with verifiable integrity
  • Tamper-proof metadata and audit logs
  • Zero-trust-friendly architecture
"You don’t have to trust your storage provider."
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