Amazon Web Services
This PowerPack includes an EM7 RBA Action to send notification messages using AWS SNS. This is particularly useful for sending SMS messages without having a dedicated SMS gateway, but can be also used for other notification methods, such as publishing to AWS SQS.
When running EM7 as an AMI in AWS, this may also be handy just for sending email notifications.
For further details of SNS, review this documentation:
Simple RBA example for using the AWS SNS service for publishing notification messages. The SNS service is an effective method for sending SMS messages (only US cellular networks covered at time of writing).