Outlook.com / Office 365

Connect your Outlook.com or Microsoft 365 calendar to Apptoto, or link your entire organization, including shared and public calendars.

Apptoto supports two methods for connecting Outlook.com and Office 365 calendars:

Method	Best for	Shared Calendars
Individual OAuth connection	Single users connecting their own calendar	No
Exchange Connector	Organizations needing shared or public calendars	Yes

Note

The Exchange Web Services (EWS) URL for Office 365 is https://outlook.office365.com/EWS/Exchange.asmx. Use this when setting up the Exchange Connector method.

Sync troubles? If your organization requires Microsoft admin approval, see Outlook / Microsoft 365 Sync Troubleshooting.

Connecting individual calendars via OAuth

This approach allows connecting any single Outlook.com / Office 365 user calendar but doesn’t provide access to shared calendars. For shared calendar access, use the Exchange Connector method instead.

1. Navigate to Add Calendar. Click the + Add Calendar button on your Appointments tab.

   

2. Select Outlook.com or Office 365. Choose your provider from the integration list, which directs you to the official Outlook.com / Office 365 login page. Enter your account credentials.

   

3. Select calendar. From the dropdown menu, select the specific calendar to sync with Apptoto, then click Next.

   

4. Configure calendar settings. Set the calendar name and color (identifiers in Apptoto only). Configure availability settings for online booking if desired. Note that clients won’t schedule unless you create a booking page. Click Connect Calendar to proceed.

   

5. Verify in Appointments tab. Navigate to apptoto.com, access your account menu, and confirm your calendars appear in the Appointments tab.

Connect shared or public calendars

To access shared or public Office 365 calendars, use the Microsoft Exchange connector with the EWS URL https://outlook.office365.com/EWS/Exchange.asmx.

Troubleshooting

My calendar stopped syncing

This usually means your Microsoft authentication token has expired or been revoked. Go to Settings > Calendars, find the affected calendar, and click Reconnect. You’ll be prompted to sign in with Microsoft again. If your organization uses admin-controlled permissions, your admin may need to re-approve Apptoto — see Outlook / Microsoft 365 Sync Troubleshooting.

New appointments are not appearing

Apptoto syncs your calendar automatically once per hour. To pull in new appointments immediately, click the Sync button on the Appointments tab or under Settings > Calendars. If appointments still don’t appear after a manual sync, confirm the correct calendar is selected under Settings > Calendars and that the appointments fall within Apptoto’s sync window (upcoming appointments only).

The wrong calendar is connected

Go to Settings > Calendars and check which calendar is currently synced. If it’s the wrong one, remove it and click + Add to connect the correct calendar. During setup, use the calendar dropdown to select the specific calendar you want Apptoto to read from. If your Microsoft account has multiple calendars, make sure you’re choosing the one where your appointments are created.

Shared calendar is not visible

Individual OAuth connections do not support shared or public calendars. To sync a shared calendar, you need to use the Exchange Connector method instead. This requires an Exchange Web Services (EWS) URL and credentials with access to the shared mailbox. See the Exchange Connector section above or contact Apptoto Support for help configuring shared calendar access.

After connecting calendars, proceed to Message Setup for the next configuration steps.