This Google Apps Script tutorial helps freelance developers integrate Vonage products with Google Workspace (formerly G-Suite) to send custom notifications when a Vonage account balance falls below a specified limit. To achieve this, the script uses the Vonage REST API to fetch the account balance and checks if it's lower than the set threshold. If so, an email is sent to the recipient with a reminder message. The script can be run periodically using triggers, allowing for automated execution without human intervention.