Syncing Overview

CalendarBridge syncs events — and updates to those events — from one calendar to another according to a user-defined set of rules called a sync connection. The process is the same whether you’re syncing a Google and an Outlook calendar, two Google calendars, or two Outlook calendars.

C Chad Updated February 23, 2026 3 min read

How sync connections work

Each sync connection is a one-way connection between a source calendar and a destination calendar. When an event is created, edited, or canceled on the source calendar, CalendarBridge creates, edits, or cancels a corresponding event copy on the destination calendar.

Importantly, edits to event copies on the destination calendar are not synced back to the source calendar — this ensures your original events are never corrupted in any way.

Each sync connection has user-controlled settings to dictate the color and subject of event copies, to help you distinguish your native events from event copies created by CalendarBridge.

Each sync connection has a number of user-controlled settings that dictate which information is synced from the source calendar to the destination calendar. A sync connection can sync no information about the event (in which case the event copy will simply be titled “busy” or “free”), or can sync one or more of subject, description, location, web conference information, and attendees.

Sync frequency depends on the source calendar

For Google and Microsoft source calendars, syncing is real-time. CalendarBridge continuously listens for activity on the source calendar and syncs any updates within a minute or two.

For iCloud and Internet (ICS URL) source calendars, CalendarBridge checks the source calendar for updates every 5 to 10 minutes.

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CalendarBridge does not impose any limits on how many events can be synced over a sync connection. To avoid looping, CalendarBridge does not make copies of its own copies.

How to get started

If syncing is what your group/organization needs, the first step is to determine whether you want user licenses or sync licenses. Read Group Account License Types to help you decide. Individual users should follow the Getting Started Guide.