What are the different calendar connection options?

In this article, you'll learn about the differences between the various OnceHub calendar integrations

OnceHub connects to your personal calendar in real time. Busy time is automatically retrieved and bookings are created directly in your calendar. OnceHub has calendar integrations with Google Calendar, Office 365 Calendar , Exchange/Outlook Calendar, and iCloud Calendar.

Integration differences

There are some minor differences between the different calendar integrations, which are detailed in the tables below. 

NoteOutlook Calendar can be connected to OnceHub in different ways. See the column according to the method you chose to connect with.

ScheduleOnce
Google Calendar
Exchange/Outlook Calendar via EWSOffice 365 Calendar via OAuth 2.0
Office 365 Calendar via EWSiCloud Calendar
Main and sub-calendarsYesYesYesYesYes
Shared calendarsYesYesYes, if expressly shared with youYes Yes
Booking in additional calendarsYes, as event guestYes, on a separate eventYes, on a separate eventYes, on a separate eventYes, on a separate event
Resource calendarsYes, G Suite resources are fully supported for both resource scheduling and conditional booking
NoNoNoDoesn't exist in iCloud
Cancel or reschedule by the UserYes, in the Activity stream OR directly in Google Calendar
Yes, in the Activity stream OR directly in Exchange/Outlook CalendarYes, in the Activity streamYes, in the Activity stream OR directly in Office 365 CalendarYes, in the Activity stream
Booking reassignmentYes, in the Activity streamNoNoNoNo
Corporate connectionYes, using G Suite
Yes, on requestNoYes, on requestNo
Real time connectionYesYesYesYesYes
AuthenticationOAuth 2.0Email address and password/app password
OAuth 2.0Email address and password/app passwordApple ID and app-specific password
Secure connectionEncryptedEncryptedEncryptedEncryptedEncrypted


InviteOnce
Google Calendar
Exchange/Outlook Calendar via EWSOffice 365 Calendar via OAuth 2.0
Office 365 Calendar via EWS
Main calendarYesYesYesYes
Shared calendarsYesYesYesYes
Resource calendarsNoYesYesYes
Corporate connectionYes, using G Suite
Yes, on requestNoYes, on request
Real-time connectionYesYesYesYes
AuthenticationOAuth 2.0Email address and password/app passwordOAuth 2.0Email address and password/app password
Secure connectionEncryptedEncryptedEncryptedEncrypted
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