Guides
Framework guides
Each guide is a working integration for one stack — where to put the API key, how to call the send endpoint, and what to do when it fails. For the client's full surface (every option, every method, the typed errors), read the Node SDK reference instead — these guides link to it rather than repeating it.
Next.js
Send from a Server Action and from a Route Handler, with the API key kept server-side where it belongs.
Node.js & Express
A POST route that sends a welcome email, with the error handling and retry rules that keep it from misbehaving under load.
React Email
Write your template as a React component and pass it straight to the SDK — no manual render step.
Convex
Send from a Convex action, and why the send belongs there rather than in a mutation.