npm install lettr
# or
yarn add lettr
# or
pnpm add lettr

import { Lettr } from 'lettr';

const lettr = new Lettr(process.env.LETTR_API_KEY);

async function main() {
  await lettr.emails.send({
    from: 'you@example.com',
    to: ['recipient@example.com'],
    subject: 'Hello from Lettr',
    html: '<p>Welcome to Lettr!</p>'
  });
}

main();

const { Lettr } = require('lettr');

const lettr = new Lettr(process.env.LETTR_API_KEY);

lettr.emails.send({
  from: 'you@example.com',
  to: ['recipient@example.com'],
  subject: 'Hello from Lettr',
  html: '<p>Welcome to Lettr!</p>'
});

import { Lettr, SendEmailOptions } from 'lettr';

const lettr = new Lettr(process.env.LETTR_API_KEY!);

const options: SendEmailOptions = {
  from: 'you@example.com',
  to: ['recipient@example.com'],
  subject: 'Hello from Lettr',
  html: '<p>Welcome to Lettr!</p>'
};

await lettr.emails.send(options);