Google Appengine sending emails: [Error] unauthorized sender

Question

I\'m trying to use google app engine\'s mail service on my site. It\'s showing some error whenever I visit the page that sends the email. The error says that I am using an

Answer 1

First follow these steps

https://cloud.google.com/appengine/docs/python/mail/#who_can_send_mail

Then you need to manually add the sender email in cloud console

How to add an authorized sender