How to customize the subject in Google Forms email notifications?

You can customize the subject line using form responses. Add the entry#id for the form field(s) in the subject & it will show the response filled by the user.

By adding unique fields such as name, email, phone etc in the email notifications subject, collaborators can easily search and find responses instantly.

By using key details such as amount to be paid, pickup time etc in the subject line of the response receipts, you can make it easy for your users to get more context about the email.

How to customize the email subject?