Outlook Calendar Sharing vs Don't Double Book Me

Same Tenant Only

Outlook's calendar sharing works within your Microsoft 365 organization. You can share your calendar with coworkers in the same tenant, and they can see your availability or even your full event details. But if you have a personal Outlook account, a Google Calendar, or work with people in a different organization, native sharing doesn't reach across those boundaries.

Don't Double Book Me connects calendars across any combination of Google and Outlook accounts: personal, work, different organizations, different providers. Your busy blocks flow between all of them automatically.

Visibility Without Blocking

Even within the same organization, Outlook's shared calendars show you someone's schedule as an overlay. The events don't actually block time on your own calendar. Your booking pages, scheduling tools, and coworkers can still book over those times because your calendar doesn't show a conflict.

Don't Double Book Me creates actual events on your calendar. When your personal calendar has a dentist appointment, a corresponding busy block appears on your work calendar. Anyone checking your availability sees that time as taken.

Privacy Controls

Outlook's sharing permissions are all-or-nothing for each calendar: you either share free/busy only, limited details, or full details. You can't control visibility per-event or choose how synced events appear on the receiving calendar.

Don't Double Book Me lets you choose exactly how each sync's events appear: as "Busy" blocks with no details, as private events, or with the original information. You control what crosses between calendars, not your IT admin.

Simple Pricing

Personal Plan - $20/year

Outlook's calendar sharing is bundled with Microsoft 365, but it only works within your organization and doesn't create busy blocks. Don't Double Book Me costs just $20/year and actually prevents double bookings across Google and Outlook with real-time sync and privacy controls.

Team Plan - $16/seat/year

For teams where everyone needs their calendars synced across multiple accounts and providers, our team plan provides unlimited syncs at $16/seat/year with consolidated billing and priority support.