Instructions to set-up app at gmail: 

Step:1 Go to your gmail settings at this Link: https://myaccount.google.com/security

Step:2 Enable 2-Step verification at that page

• After turning on 2-step verification, you will see App passwords right after it

• You’ll be taken here as seen below:

Click Select App and select other (Custom): then give your app any name

It will give you this below dialogue box when u click generate

• Provide the password to us for configuration
• DONE

You can download the plug-in here