const {Coresender, BodyType} = require('coresender');

const client = new Coresender('account_id', 'account_secret');

const params = {
    fromEmail: '[email protected]',
    toEmail: '[email protected]',
    subject: 'Hello Bob',
    body: '<div>Nice to meet you.</div>',
    bodyType: BodyType.HTML,
};

const result = await client.simpleEmail(params);

{
  messageId: 'd2a82708-2067-4b3b-8866-b33355036fde',
  customId: '',
  status: 'accepted',
  errors: []
}

const {Coresender} = require('coresender');

const client = new Coresender('account_id', 'account_secret');

const request = client.sendEmailRequest();

// required fields only
request.addToBatch({
    fromEmail: '[email protected]',
    toEmail: '[email protected]',
    subject: 'Hello Bob',
    bodyText: 'Nice to meet you.',
});

// available fields
request.addToBatch({
    fromEmail: '[email protected]',
    fromName: 'Alice',
    toEmail: '[email protected]',
    toName: 'Bob',
    subject: 'Hello Bob',
    bodyText: 'Nice to meet you.',
    trackOpens: true,
    trackClicks: true,
    listUnsubscribe: 'https://unsub.me/',
    listId: '000471416624-654a-3d21-b98e-7654e321',
    customId: '123e4567-e89b-12d3-a456-426614174000',
    customIdUnique: true,
    bodyHTML: '<div>Nice to meet you.</div>',
    replyTo: [{email: '[email protected]', name: 'Support'}],
});

const result = await request.execute();

result.allAccepted() // returns TRUE if all messages was accepted
result.getItems() // returns array of status objects for all messages

// Example result from getItems() method
[
  {
    messageId: 'ff191365-316e-41e0-a185-5c7433d92b8a',
    customId: '',
    status: 'accepted',
    errors: []
  },
  {
    messageId: '',
    customId: '',
    status: 'rejected',
    code: 'EMAIL_SUPPRESSED',
    errors: [
      {
        code: 'EMAIL_SUPPRESSED',
        description: "The recipient's email address [email protected] is on a suppression list"
      }
    ]
  }
]