Git hook to send email notification on repo changes

Question

How do I configure the appropriate Git hook to send a summary email whenever a set of changes is pushed to the upstream repository?

Answer 1

This is my way of send email notification to users every time some one push to the repository.

Setting Up Git Commit Email Notification

It's based on Andy Parkins's scripts. I change it to used SMTP to send email. Of course, gmail's SMTP can also be used.