Form Postman Add-on for Google Forms

'Form Postman' add-on can produce up to thousands of professional confirmation and notification emails per day for Google Forms.
Advantages of free version:
- Send from alias
- Full support standard HTML.
- Sending condition: sends or not based on the user's answers.
- 'Backup Sender' feature help produces up to thousands of emails per day.
- Attach email content as a pdf file.