An alarm publishes to SNS, but a newly added email endpoint receives no alerts and the subscription is pending confirmation. What should operations verify?

1. Extend only the SNS delivery retry policy while leaving the email subscription unconfirmed.
2. Complete the authorized subscription confirmation and test the end-to-end notification path.
3. Assume adding an address proves messages are delivered even before confirmation.
4. Remove all alarm actions so the email queue is less busy.