Send SMS Message with Twilio

This example demonstrates how to send SMS messages with the Twilio SDK and AWS lambda.

Use Cases:

Sending users confirmation text messages

Setup

Sign up for a Twilio account
Create a new phone number in your Twilio trial account
Grab your ACCOUNT SID and AUTH TOKEN from the Twilio console and plug those into the serverless.yml file in the next step

Set your env variables in serverless.yml with your Twilio account values

environment:
  # replace these env variables with your twilio account values
  TWILIO_ACCOUNT_SID: YOUR-TWILIO-ACCOUNT-SID-HERE
  TWILIO_AUTH_TOKEN: YOUR-TWILIO-AUTH-TOKEN-HERE
  TWILIO_PHONE_NUMBER: YOUR-TWILIO-PHONE-NUMBER-HERE

If you want to use encrypted API keys, see our encrypted environment variables example

Install the dependencies required by the service
```
npm i --only=prod
```
Deploy the service
```
serverless deploy
```
Invoke the function and send an SMS message

Update the to phone number the event.json file and message to send in the SMS

Then invoke the function with the serverless CLI. Set the --path event.json so the function knows where to send the SMS.
```
serverless invoke -f sendText --path event.json
```
(Optional) Deploy the front-end application

Update the API_ENDPOINT variable in the /frontend/index.html file and deploy the /frontend folder to a static host of your choice.

We recommend S3, netlify, or surge.sh for quick and easy static site hosting.