- To determine why the error "Rest API is not yet supported for this mailbox' appears when trying to set up the Clio Add-in for Outlook.
- To determine why the Rest API error is appearing when setting up Clio Plug-in for Office 365.
- Clio Web App
- Office 365
The issue is likely related to your Office subscription level. Please ensure that you have a Business Premium subscription as per The Clio Add-in for Office 365 and Outlook.com.
If you have a Business Premium subscription to Office 365 and are still encountering the error, please contact Clio Support at 1-888-858-2546.