Compose Email UI Action on RITM List View in Workspace

Hi All,

I have a requirement to make the Compose Email UI Action available on the RITM list view in Workspace.

I attempted to add the UI Action, but it is not working as expected in Workspace. 

Has anyone implemented this successfully in Workspace, or can you guide me on the correct approach or any limitations to be aware of?

Any help or pointers would be greatly appreciated.

Thanks in advance.
Regards,
Raj