Subscribe an email address to an Amazon SNS topic using an Amazon SDK - Amazon Simple Notification Service
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Subscribe an email address to an Amazon SNS topic using an Amazon SDK

The following code examples show how to subscribe an email address to an Amazon SNS topic.

Action examples are code excerpts from larger programs and must be run in context. You can see this action in context in the following code examples:

.NET
Amazon SDK for .NET
Note

There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository.

/// <summary> /// Creates a new subscription to a topic. /// </summary> /// <param name="client">The initialized Amazon SNS client object, used /// to create an Amazon SNS subscription.</param> /// <param name="topicArn">The ARN of the topic to subscribe to.</param> /// <returns>A SubscribeResponse object which includes the subscription /// ARN for the new subscription.</returns> public static async Task<SubscribeResponse> TopicSubscribeAsync( IAmazonSimpleNotificationService client, string topicArn) { SubscribeRequest request = new SubscribeRequest() { TopicArn = topicArn, ReturnSubscriptionArn = true, Protocol = "email", Endpoint = "recipient@example.com", }; var response = await client.SubscribeAsync(request); return response; }
  • For API details, see Subscribe in Amazon SDK for .NET API Reference.

C++
SDK for C++
Note

There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository.

//! Subscribe to an Amazon Simple Notification Service (Amazon SNS) topic with delivery to an email address. /*! \param topicARN: An SNS topic Amazon Resource Name (ARN). \param emailAddress: An email address. \param clientConfiguration: AWS client configuration. \return bool: Function succeeded. */ bool AwsDoc::SNS::subscribeEmail(const Aws::String &topicARN, const Aws::String &emailAddress, const Aws::Client::ClientConfiguration &clientConfiguration) { Aws::SNS::SNSClient snsClient(clientConfiguration); Aws::SNS::Model::SubscribeRequest request; request.SetTopicArn(topicARN); request.SetProtocol("email"); request.SetEndpoint(emailAddress); const Aws::SNS::Model::SubscribeOutcome outcome = snsClient.Subscribe(request); if (outcome.IsSuccess()) { std::cout << "Subscribed successfully." << std::endl; std::cout << "Subscription ARN '" << outcome.GetResult().GetSubscriptionArn() << "'." << std::endl; } else { std::cerr << "Error while subscribing " << outcome.GetError().GetMessage() << std::endl; } return outcome.IsSuccess(); }
  • For API details, see Subscribe in Amazon SDK for C++ API Reference.

CLI
Amazon CLI

To subscribe to a topic

The following subscribe command subscribes an email address to the specified topic.

aws sns subscribe \ --topic-arn arn:aws:sns:us-west-2:123456789012:my-topic \ --protocol email \ --notification-endpoint my-email@example.com

Output:

{ "SubscriptionArn": "pending confirmation" }
  • For API details, see Subscribe in Amazon CLI Command Reference.

Java
SDK for Java 2.x
Note

There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository.

import software.amazon.awssdk.regions.Region; import software.amazon.awssdk.services.sns.SnsClient; import software.amazon.awssdk.services.sns.model.SnsException; import software.amazon.awssdk.services.sns.model.SubscribeRequest; import software.amazon.awssdk.services.sns.model.SubscribeResponse; /** * Before running this Java V2 code example, set up your development * environment, including your credentials. * * For more information, see the following documentation topic: * * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html */ public class SubscribeEmail { public static void main(String[] args) { final String usage = """ Usage: <topicArn> <email> Where: topicArn - The ARN of the topic to subscribe. email - The email address to use. """; if (args.length != 2) { System.out.println(usage); System.exit(1); } String topicArn = args[0]; String email = args[1]; SnsClient snsClient = SnsClient.builder() .region(Region.US_EAST_1) .build(); subEmail(snsClient, topicArn, email); snsClient.close(); } public static void subEmail(SnsClient snsClient, String topicArn, String email) { try { SubscribeRequest request = SubscribeRequest.builder() .protocol("email") .endpoint(email) .returnSubscriptionArn(true) .topicArn(topicArn) .build(); SubscribeResponse result = snsClient.subscribe(request); System.out.println("Subscription ARN: " + result.subscriptionArn() + "\n\n Status is " + result.sdkHttpResponse().statusCode()); } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } } }
  • For API details, see Subscribe in Amazon SDK for Java 2.x API Reference.

JavaScript
SDK for JavaScript (v3)
Note

There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository.

Create the client in a separate module and export it.

import { SNSClient } from "@aws-sdk/client-sns"; // The AWS Region can be provided here using the `region` property. If you leave it blank // the SDK will default to the region set in your AWS config. export const snsClient = new SNSClient({});

Import the SDK and client modules and call the API.

import { SubscribeCommand } from "@aws-sdk/client-sns"; import { snsClient } from "../libs/snsClient.js"; /** * @param {string} topicArn - The ARN of the topic for which you wish to confirm a subscription. * @param {string} emailAddress - The email address that is subscribed to the topic. */ export const subscribeEmail = async ( topicArn = "TOPIC_ARN", emailAddress = "usern@me.com", ) => { const response = await snsClient.send( new SubscribeCommand({ Protocol: "email", TopicArn: topicArn, Endpoint: emailAddress, }), ); console.log(response); // { // '$metadata': { // httpStatusCode: 200, // requestId: 'c8e35bcd-b3c0-5940-9f66-06f6fcc108f0', // extendedRequestId: undefined, // cfId: undefined, // attempts: 1, // totalRetryDelay: 0 // }, // SubscriptionArn: 'pending confirmation' // } };
Kotlin
SDK for Kotlin
Note

There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository.

suspend fun subEmail(topicArnVal: String, email: String): String { val request = SubscribeRequest { protocol = "email" endpoint = email returnSubscriptionArn = true topicArn = topicArnVal } SnsClient { region = "us-east-1" }.use { snsClient -> val result = snsClient.subscribe(request) return result.subscriptionArn.toString() } }
  • For API details, see Subscribe in Amazon SDK for Kotlin API reference.

PHP
SDK for PHP
Note

There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository.

require 'vendor/autoload.php'; use Aws\Exception\AwsException; use Aws\Sns\SnsClient; /** * Prepares to subscribe an endpoint by sending the endpoint a confirmation message. * * This code expects that you have AWS credentials set up per: * https://docs.aws.amazon.com/sdk-for-php/v3/developer-guide/guide_credentials.html */ $SnSclient = new SnsClient([ 'profile' => 'default', 'region' => 'us-east-1', 'version' => '2010-03-31' ]); $protocol = 'email'; $endpoint = 'sample@example.com'; $topic = 'arn:aws:sns:us-east-1:111122223333:MyTopic'; try { $result = $SnSclient->subscribe([ 'Protocol' => $protocol, 'Endpoint' => $endpoint, 'ReturnSubscriptionArn' => true, 'TopicArn' => $topic, ]); var_dump($result); } catch (AwsException $e) { // output error message if fails error_log($e->getMessage()); }
  • For API details, see Subscribe in Amazon SDK for PHP API Reference.

Python
SDK for Python (Boto3)
Note

There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository.

class SnsWrapper: """Encapsulates Amazon SNS topic and subscription functions.""" def __init__(self, sns_resource): """ :param sns_resource: A Boto3 Amazon SNS resource. """ self.sns_resource = sns_resource @staticmethod def subscribe(topic, protocol, endpoint): """ Subscribes an endpoint to the topic. Some endpoint types, such as email, must be confirmed before their subscriptions are active. When a subscription is not confirmed, its Amazon Resource Number (ARN) is set to 'PendingConfirmation'. :param topic: The topic to subscribe to. :param protocol: The protocol of the endpoint, such as 'sms' or 'email'. :param endpoint: The endpoint that receives messages, such as a phone number (in E.164 format) for SMS messages, or an email address for email messages. :return: The newly added subscription. """ try: subscription = topic.subscribe( Protocol=protocol, Endpoint=endpoint, ReturnSubscriptionArn=True ) logger.info("Subscribed %s %s to topic %s.", protocol, endpoint, topic.arn) except ClientError: logger.exception( "Couldn't subscribe %s %s to topic %s.", protocol, endpoint, topic.arn ) raise else: return subscription
  • For API details, see Subscribe in Amazon SDK for Python (Boto3) API Reference.

Ruby
SDK for Ruby
Note

There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository.

require "aws-sdk-sns" require "logger" # Represents a service for creating subscriptions in Amazon Simple Notification Service (SNS) class SubscriptionService # Initializes the SubscriptionService with an SNS client # # @param sns_client [Aws::SNS::Client] The SNS client def initialize(sns_client) @sns_client = sns_client @logger = Logger.new($stdout) end # Attempts to create a subscription to a topic # # @param topic_arn [String] The ARN of the SNS topic # @param protocol [String] The subscription protocol (e.g., email) # @param endpoint [String] The endpoint that receives the notifications (email address) # @return [Boolean] true if subscription was successfully created, false otherwise def create_subscription(topic_arn, protocol, endpoint) @sns_client.subscribe(topic_arn: topic_arn, protocol: protocol, endpoint: endpoint) @logger.info("Subscription created successfully.") true rescue Aws::SNS::Errors::ServiceError => e @logger.error("Error while creating the subscription: #{e.message}") false end end # Main execution if the script is run directly if $PROGRAM_NAME == __FILE__ protocol = "email" endpoint = "EMAIL_ADDRESS" # Should be replaced with a real email address topic_arn = "TOPIC_ARN" # Should be replaced with a real topic ARN sns_client = Aws::SNS::Client.new subscription_service = SubscriptionService.new(sns_client) @logger.info("Creating the subscription.") unless subscription_service.create_subscription(topic_arn, protocol, endpoint) @logger.error("Subscription creation failed. Stopping program.") exit 1 end end
Rust
SDK for Rust
Note

There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository.

async fn subscribe_and_publish( client: &Client, topic_arn: &str, email_address: &str, ) -> Result<(), Error> { println!("Receiving on topic with ARN: `{}`", topic_arn); let rsp = client .subscribe() .topic_arn(topic_arn) .protocol("email") .endpoint(email_address) .send() .await?; println!("Added a subscription: {:?}", rsp); let rsp = client .publish() .topic_arn(topic_arn) .message("hello sns!") .send() .await?; println!("Published message: {:?}", rsp); Ok(()) }
  • For API details, see Subscribe in Amazon SDK for Rust API reference.

SAP ABAP
SDK for SAP ABAP
Note

There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository.

TRY. oo_result = lo_sns->subscribe( "oo_result is returned for testing purposes." iv_topicarn = iv_topic_arn iv_protocol = 'email' iv_endpoint = iv_email_address iv_returnsubscriptionarn = abap_true ). MESSAGE 'Email address subscribed to SNS topic.' TYPE 'I'. CATCH /aws1/cx_snsnotfoundexception. MESSAGE 'Topic does not exist.' TYPE 'E'. CATCH /aws1/cx_snssubscriptionlmte00. MESSAGE 'Unable to create subscriptions. You have reached the maximum number of subscriptions allowed.' TYPE 'E'. ENDTRY.
  • For API details, see Subscribe in Amazon SDK for SAP ABAP API reference.

For a complete list of Amazon SDK developer guides and code examples, see Using Amazon SNS with an Amazon SDK. This topic also includes information about getting started and details about previous SDK versions.