In this blog post, the author provides a detailed guide on creating Nylas webhooks using NodeJS and deploying them as serverless functions on Vercel. The process begins with setting up a Nylas account and following a Quickstart guide to create an app. The blog explains the creation of a single endpoint that supports both GET and POST methods, which is essential for enabling Nylas webhooks. The GET method returns a challenge parameter to activate the webhook, while the POST method receives and logs triggered events such as message updates. The serverless function is deployed on Vercel, and readers are guided through creating a Nylas webhook via the dashboard to handle events like starring a message. The post emphasizes the importance of returning the challenge parameter and responding with status 200 to prevent multiple event retries. Throughout, it provides example code and references to further resources, encouraging continued exploration of Nylas' capabilities.