Is a calendar attachment automatically sent when I send an invite?
When creating an invitation, a calendar attachment is included with the message by default. You can turn off this option while designing your email in the Advanced Options section. Here, you can select or unselect the Attach Calendar Invite option.
You can also turn off the calendar option with the following method:
1. Head to your draft email through the Email tab of your page's toolbar.
2. Skip ahead to the Review step.
3. On the Calendar Invite row, click the Add Calendar button.