Send job logs to someone's email

Hi all,

I’m a newbie to GitLab CI/CD, I found 1 topic regrading to sending the job logs of CI/CD pipelines to someone’s email as this link.
But until now, I don’t have any idea about this, I don’t know which steps for this feature. How do I need to configure to implement this feature or what do I should to do to achieve this?

Thanks!