node-appwrite/docs/examples/messaging/create-email.md

Appwrite is an open-source self-hosted backend server that abstract and simplify complex and repetitive development tasks behind a very simple REST API

const sdk = require('node-appwrite');

const client = new sdk.Client()
    .setEndpoint('https://cloud.appwrite.io/v1') // Your API Endpoint
    .setProject('5df5acd0d48c2') // Your project ID
    .setKey('919c2d18fb5d4...a2ae413da83346ad2'); // Your secret API key

const messaging = new sdk.Messaging(client);

const result = await messaging.createEmail(
    '<MESSAGE_ID>', // messageId
    '<SUBJECT>', // subject
    '<CONTENT>', // content
    [], // topics (optional)
    [], // users (optional)
    [], // targets (optional)
    [], // cc (optional)
    [], // bcc (optional)
    [], // attachments (optional)
    false, // draft (optional)
    false, // html (optional)
    '' // scheduledAt (optional)
);