How to delete a unconfirmed AWS SNS subscription
I am trying to delete a subscription to an SNS topic (specifically an email address) that is unconfirmed, but the AWS console won't let me. It will let me delete subscriptions that are confirmed however. Any ideas?
Answer
According to SNS architecture and design:
If subscription is APPROVED so no matter whether there is topic associated to it or not. User will be able to delete the subscription.)
If subscription is PENDING so no matter whether there is topic associated to it or not. Amazon will delete automatically the subscription after 3 days of creation.
See the FAQ for more info (scroll down to the question titled "How long will subscription requests remain pending, while waiting to be confirmed?")