Detect
Risk-score suspicious invitations using organizer, link, recurrence, attendee, and content signals.
Cross-platform calendar protection
Keep junk meetings off your calendar.
CalendarGuardian detects suspicious invitations, explains why they were flagged, blocks repeat sources within CalendarGuardian, and removes unwanted events according to your settings and the connected provider's capabilities.
Report
Report a junk invitation to CalendarGuardian and, where a provider exposes a supported production reporting API, pass the report to the provider too.
Block
Add organizers or domains to CalendarGuardian protection rules so repeat invitations can be recognized automatically.
Clean
Scan existing calendar events, review likely junk, remove unwanted items, and restore a local copy when supported.
One protection engine. Multiple calendars.
Microsoft Outlook/Microsoft 365 uses Microsoft Graph and an Outlook add-in. Google Calendar uses the Google Calendar API and push notifications across writable calendars. Apple Calendar uses EventKit on iPhone, iPad, and Mac. Android uses the native Calendar Provider for calendars synced to the device. Additional provider adapters can use the same scoring, rules, review, and audit model.