node-appwrite/docs/examples/users/create-target.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 users = new sdk.Users(client);

const result = await users.createTarget(
    '<USER_ID>', // userId
    '<TARGET_ID>', // targetId
    sdk.MessagingProviderType.Email, // providerType
    '<IDENTIFIER>', // identifier
    '<PROVIDER_ID>', // providerId (optional)
    '<NAME>' // name (optional)
);