To enable the Gmail API to use as an SMTP server, you will need to follow these steps:
- Create a Google Cloud Platform project
- Go to the Google Cloud Console and create a new project.
- Note down the project ID, as you will need it later.
- Enable the Gmail API
- Go to the API Library in the Google Cloud Console.
- Search for “Gmail API” and click on it.
- Click the “Enable” button to enable the API.
- Create OAuth 2.0 credentials
- Go to the “Credentials” page in the Google Cloud Console.
- Click the “Create credentials” button and select “OAuth client ID”.
- Choose “Web application” as the application type.
- Enter a name for the OAuth client ID.
- In the “Authorised redirect URIs” section, add the URL of the page that will be using the SMTP server.
- Click the “Create” button to create the OAuth client ID.
- Download the client secret JSON file for the OAuth client ID and save it in a secure location.
- Authorise the API client
- Follow the instructions on the Google Cloud Console to authorise the API client.
- Use the OAuth client ID and secret to generate an access token.
- Store the access token securely.
- Configure your application to use the Gmail API as an SMTP server
- Use an SMTP library in your preferred programming language to configure your application to use the Gmail API as an SMTP server.
- Set the SMTP server to
smtp.gmail.com. - Set the SMTP port to
587. - Set the SMTP authentication method to OAuth2.
- Provide the OAuth client ID, client secret, and access token to the SMTP library.
- Test your application
- Send a test email using your application and ensure that it is delivered successfully.