You can sync Microsoft 365 or Google calendars with your Slate Events, Scheduler, and Availability calendars.

Two-way calendar integrations

Availability windows set in the Availability Slate tool appear in your external calendar. Availability also respects your external calendar’s availability.

📖 Further reading: Adding Scheduler Availability

Syncing calendars on another’s behalf

Unless you have their password, there’s no way to create this type of calendar integrations for someone else. Because users sign in to their own calendar providers, they must add these integrations themselves.

See Pull external calendar into Slate with iCal feed for an alternative.

Syncing calendars with Slate

To add your Microsoft 365 or Google calendar to Slate:

1. From the main navigation, select Events.

2. Select Calendars.

3. Select New Calendar.

4. From the Service list, select your preferred calendar service:

   • Google Calendar

   • Microsoft 365 Calendar

5. Select Continue. You are directed to your calendar service’s authorization interface.

6. Follow prompts from your calendar service. Slate never accesses your username or password. You are directed back to Slate.

7. Configure the following settings:

   • Name: Edit the name. Defaults to the calendar service type.

   • Folder: Keep calendars organized by placing yours in a folder. Select Other to create a new folder.

   • Calendar: Defaults to the main calendar. Optionally select a specific from the list.

   • Free/Busy: Select Use to determine availability and for two-way integration.

   • (🏔️ Summit 2025 Feature) Sync Events: Select Use two-way integration for all events assigned to this user

   • Color: Optionally select a color for organizational purposes.

8. Select Save.