Pass email address list to SNS subscription endpoint

Question

Is it possible to pass a list of email addresses as the endpoint for an SNS subscription?

I've got something like this

{
    "AWSTemplateFormatVersion": "2010-09-09",
    "Resources" : {
      "EmailSNSTopic": {
        "Type" : "AWS::SNS::Topic",
        "Properties" : {
          "DisplayName" : "${display_name}"
        }
      },
      "MySubscription": {
        "Type": "AWS::SNS::Subscription",
        "Properties": {
          "TopicArn" : { "Ref" : "EmailSNSTopic" },
          "Endpoint" : "foo@foo.com"
          "Protocol" : "email"
        }
      }
    },
      "Outputs" : {
        "ARN" : {
          "Description" : "Email SNS Topic ARN",
          "Value" : { "Ref" : "EmailSNSTopic" }
        }
      }
}

But what I'd like to do is pass a number of email addresses instead of just one.

user_2246345 · Answer

As per the documentation

Endpoint should be a string

Cloudformation doesn't allow you to pass a list.

You dont want to have a custom resource as well.

There is one more way Running bash commands in AWS CloudFormation templates

You just run awscli command like below

    Resources:
    Command:
        Type: 'AWSUtility::CloudFormation::CommandRunner'
        Properties:
        Command: aws s3 ls > /command-output.txt
        Role: String
        LogGroup: String #Optional
        SubnetId: String #Optional
        SecurityGroupId: String #Optional
        KeyId: String #Optional

user_10608018 · Answer

I don’t thing it is possible using native syntax.

You might want to try aws cloud formation custom resource and pass list to lambda for execution one by one.

Pass email address list to SNS subscription endpoint

2 Answers