Is there a way to implement content add-in in Outlook ?

Hi Team,
I'm developing Add-in's for Outlook using Office JS API's.

I have a requirement where when user clicks on add-in on Compose email, it should open a content box(similar to Co Pilot ) in the Compose email section instead of showing as a taskpane on the right side.
Is there a way to implement content add-in for Outlook ?

Please let me know.

Thanks & Regards,