How to Receive an Email for Failed SMS Deliveries on AWS SNS: A Step-by-Step Guide

Prerequisites and Requirements

Before we begin, make sure you have the following:

1. A functioning AWS account with AWS SNS set up.
2. An Amazon SNS topic created for your SMS messages.
3. An AWS Lambda function (we’ll create one later).
4. An SNS subscription with an email address or an HTTP/HTTPS endpoint.

Step 1: Create an AWS Lambda Function

AWS Lambda is a serverless compute service that runs your code in response to events. We’ll create a Lambda function to handle failed SMS deliveries and send email notifications.

// Create a new Lambda function:
aws lambda create-function --function-name sns-failed-delivery-handler --runtime nodejs14.x --handler index.handler --role ROLE_ARN --environment Variables={BUCKET_NAME=your-bucket-name}

Replace `ROLE_ARN` with the ARN of your Lambda execution role and `your-bucket-name` with the name of your S3 bucket.

Step 2: Configure the Lambda Function

In your Lambda function, create a new file called `index.js` with the following code:

exports.handler = async (event) => {
  const sns = new AWS.SNS({ region: 'your-region' });
  const snsTopicArn = 'your-sns-topic-arn';
  const emailAddress = 'your-email-address';

  try {
    const message = event.Records[0].Sns.Message;
    const deliveryStatus = message.deliveryStatus;

    if (deliveryStatus === 'FAILURE') {
      const failureReason = message.deliveryFailureReason;
      const phoneNumber = message.destinationPhoneNumber;

      const emailParams = {
        Destination: {
          ToAddresses: [emailAddress],
          CcAddresses: [],
          BccAddresses: []
        },
        Message: {
          Body: {
            Text: {
              Data: `Failed SMS delivery to ${phoneNumber}: ${failureReason}`
            }
          },
          Subject: {
            Data: 'Failed SMS Delivery Notification'
          }
        },
        Source: 'your-email-address'
      };

      await sns.publish(emailParams).promise();
    }
  } catch (error) {
    console.error(error);
  }
};

Replace `your-region` with the region where your AWS resources are located, `your-sns-topic-arn` with the ARN of your SNS topic, and `your-email-address` with the email address you want to receive notifications.

Step 3: Set Up an SNS Subscription

Create an SNS subscription to trigger the Lambda function when an SMS delivery fails:

aws sns subscribe --topic-arn your-sns-topic-arn --protocol lambda --endpoint arn:aws:lambda:your-region:your-account-id:function:sns-failed-delivery-handler

Replace `your-sns-topic-arn` with the ARN of your SNS topic, `your-region` with the region where your AWS resources are located, and `your-account-id` with your AWS account ID.

Step 4: Test Your Setup

Send an SMS message to a non-existent phone number to simulate a failed delivery:

aws sns publish --topic-arn your-sns-topic-arn --message '{"default": "Test message", "phoneNumber": "+19999999999"}'

Wait for the Lambda function to trigger and send an email notification to the specified email address.

Troubleshooting Tips

If you encounter issues or don’t receive email notifications, check the following:

• Verify that the Lambda function is executing correctly and not throwing errors.
• Check the SNS topic permissions to ensure the Lambda function has execute permission.
• Confirm that the email address specified in the Lambda function is correct and receiving emails.
• Review the AWS CloudWatch logs for any error messages or issues related to the Lambda function or SNS topic.

Conclusion

In this article, we’ve shown you how to receive email notifications for failed SMS deliveries on AWS SNS. By following these steps, you’ll be able to stay on top of delivery issues, improve customer experience, and reduce costs associated with failed deliveries.

Remember to test your setup thoroughly and troubleshoot any issues that arise. With this comprehensive guide, you’ll be well on your way to optimizing your SMS messaging strategy and ensuring that your customers receive the messages they need.

Now that you’ve set up email notifications for failed SMS deliveries, you’ll be able to:

• Improve customer experience by ensuring timely and accurate message delivery.
• Reduce costs associated with failed deliveries and optimize your messaging strategy.
• Enhance troubleshooting capabilities with detailed insights into delivery failures.

Stay ahead of the game with AWS SNS and email notifications for failed SMS deliveries. Happy messaging!

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