Integrations
Works with the calendars you already use.
6 calendar providers, kept in lockstep with the rest of your stack.
- Google Calendar
- Microsoft Outlook
- Apple Calendar
- Y!Yahoo Calendar
- FMFastmail
- ZZoho Calendar
Providers
6 providers. Pick any combination.
Connect your own calendars, or on Pro invite staff and subcontractors to connect their Google or Outlook calendar to your account. They pick busy-only or full details, no CalendarSync login needed.
Google Calendar
Google Calendar API
Full read/write access with push notifications for real-time sync.
- Two-way sync
- Real-time updates
- All calendar types
- Recurring events
Microsoft Outlook
Microsoft Graph API
Personal accounts and Microsoft 365 business plans. OAuth 2.0 with subscription-based change tracking.
- Two-way sync
- Microsoft 365 support
- Teams meetings
- Recurring events
Apple Calendar
CalDAV
Sync iCloud calendar events. Works with iPhone, iPad, and Mac calendar apps.
- CalDAV protocol
- iCloud sync
- iPhone & Mac
- All calendar types
- Y!
Yahoo Calendar
CalDAV
Connect Yahoo Calendar for users who rely on Yahoo for personal scheduling.
- CalDAV protocol
- Yahoo Mail sync
- Personal calendars
- FM
Fastmail
CalDAV
Sync Fastmail calendars. Ideal for privacy-focused professionals using Fastmail.
- CalDAV protocol
- Privacy-first
- Business plans
- Z
Zoho Calendar
CalDAV
Connect Zoho Calendar for teams already in the Zoho ecosystem.
- CalDAV protocol
- Zoho ecosystem
- Team calendars
Standards
Built on open standards.
Official APIs and open protocols. Your data stays in your calendar apps; we never host your events.
- Google Calendar API
- Full read/write access with push notifications for real-time sync.
- Microsoft Graph API
- Connects to Outlook and Microsoft 365 with OAuth 2.0 and subscription-based change tracking.
- CalDAV
- Open standard used by Apple, Yahoo, Fastmail, Zoho, and many others. Broad compatibility.
- CalendarSync API
- Our own REST API. Trigger syncs, read logs, and manage pairs programmatically.
Ready to sync everything?
Setup takes under 2 minutes. 7-day free trial, no card needed.