Some installations of Jenkins might be used in such a way where different jobs might want to use different AWS credentials to publish messages to AWS SNS topics. Right now the access and secret keys are configurable only at a global level, which is not conducive to this type of setup. Please consider:

1) making the global AWS credential config optional
2) allowing the AWS credentials to be set at the job level

Also, if possible consider using the standard Jenkins credential management system.

Thanks for providing this plugin!