I want to add Email Quick Action in publisher view before Question(As displayed in below image). 
[![enter image description here](https://i.stack.imgur.com/gZQQC.png)](https://i.stack.imgur.com/gZQQC.png)

When i edit layout and trying to add Email Quick Action in Salesforce Classic Publisher, Email quick action is not available - (see below image)
[![enter image description here](https://i.stack.imgur.com/JwCfS.png)](https://i.stack.imgur.com/JwCfS.png)

Kindly Please Advice. 

**Thanks  

 Nirmallya Ghosh**