Use A Lambda function to send an SMS over Amazon Pinpoint

lambda-pinpoint.js

const appId = [[PINPOINT_APPLICATION_ID]];
const destination = [[YOUR_PHONE_NUMBER]];

const { Pinpoint } = require('aws-sdk');
const pinpoint = new Pinpoint();

const payloadFn = (appId, destination, message) => {
  const ApplicationId = appId;

  const Addresses = {};
  Addresses[destination] = { ChannelType: 'SMS' };

  const MessageConfiguration = {
    SMSMessage: {
      Body: message,
      MessageType: 'TRANSACTIONAL',
      SenderId: 'CloudwatchAlert'
    }
  };

  return {
    ApplicationId,
    MessageRequest: { 
      Addresses,
      MessageConfiguration
    }
  };
};

exports.handler = async event => {
  const message = 'Testing';

  const payload = payloadFn(appId, destination, message);
  await pinpoint.sendMessages(payload).promise();
};

lambda-policy.json

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": [
        "logs:CreateLogStream",
        "logs:CreateLogGroup",
        "logs:PutLogEvents",
        "mobiletargeting:SendMessages"
      ],
      "Resource": "*"
    }
  ]
}