In order to test the emails sent from the app, you need to:
- The email address must be Gmail and you might need to make some configurations in your Gmail account to allow you to send emails from an external app.
- Access: https://myaccount.google.com/security and add a password to App passwords selecting custom application in the menu.
- This feature does only work if you have 2-Step verification enabled. To enable it, you'll need to follow the steps detailed here: https://www.google.com/landing/2step/
Once you have the token, you need to add it to your local env variables. Follow the instructions at Environment variables to know how to configure your variables.