Email Notification for Project Task Comments

How to setup email notification for Project -> Task -> Comments and Other updates to respective users who are allocated to a particular project?

I am using V12, We are not getting any email notification for comments, status change or any other task related updates.

Only emails are coming if I share a project or task with particular users.

Anyone can help to setup email notification for respective users in project & taks doctype?

There are different approaches to this matter:

Thanks boss for your kind support.
I have configured Auto E-Mail report for Task, but how do I customized it, I need some extra fields in Task report in email or pdf.