An SNS Topic can notify subscribers via email. On the canvas, select your SNS Topic node and set the "Notification Email" field to specify a recipient. CloudFormation will create an email subscription; the recipient will receive a confirmation email and must click the link before messages are delivered.
Paste into this field
SNS Topic → subscriptionEmailOutput looks like
alerts@example.comOn the canvas, click your SNS Topic node to open the property panel.
Find the "Notification Email" field in the property panel. Enter the destination email address (e.g. alerts@example.com). This creates an email subscription when the stack deploys.
After CloudFormation creates the stack, AWS sends a confirmation email to that address. The recipient must click "Confirm subscription" in the email before SNS will deliver messages to them.
CloudFormation creates the subscription in "PendingConfirmation" state. The stack completes successfully — it does not wait for the recipient to confirm.
Publish a test message from the SNS console: Topics → your topic → "Publish message" → enter a test body → Publish.
Once you have the value, go back to CloudStack Canvas and paste it into the highlighted field.
CloudStack Canvas · Validation Guide