Registering Application in Google Cloud Console

To register an application in the Google Cloud console, do the following:

1. Sign in to the Google Cloud console under a Google account that you want to use for sending emails.
2. Create a new project and enable Gmail API for the project.

You can do this with the Google setup tool.

3. Configure OAuth consent screen for your project.
4. Create the OAuth 2.0 client ID credentials — a client ID and client secret for the custom application.
5. Record the following data required for acquiring an access token:

• Client ID
• Client secret