I am developing a plug-in for outlook mac, I have search all over Google and community and everyone told me that its not possible to make Add-in for Outlook mac because it's simply doesn't support and I admitted but I have just seen the WebEx plugin for outlook and I am wondering how they are manage to do so? If anyone have idea I would really appreciate it 

![enter image description here](https://i.stack.imgur.com/Yg6VJ.png)