Hi Jason, this is an interesting request.
While we review how to better approach it with what @Pablo Borbón24 is mentioning, you can also use AWS services to build your own SMS or Cloud notification infrastructure.
AWS provides ways for you to process your incoming emails, like the example described here25. You could use this for specific email groups or recipients that you need notifications to be sent. A recipient could represent a group of mobile numbers that need to receive a notification. Then you could instead of forwarding emails as in the example, connect the lambda function to SNS26 to send those messages as SMS26.