sns_parameter_example.json

{
"AWSTemplateFormatVersion": "2010-09-09",
"Parameters" : {
  "SNSEmail" : {
    "Type" : "String",
    "Description" : "Enter email for SNS notification"
  }
},
"Resources" : {
    "AlertSNSTopic" : {
        "Type" : "AWS::SNS::Topic",
        "Properties" : {
          "Subscription" :  [{
            "Endpoint" : { "Ref" : "SNSEmail"},
            "Protocol" : "email"
          }]
        }
      }
  }
}