Smartpings a service built to handle different types of messaging/communication/notification channels like emails and sms. It has an API that other consumers/developers can subscribe to and use.
For example, developers in need of sms services can subscribe to Smartpings and use it for notifications and send sms to their customers. They will be able to pay to get a certain number of sms. Same applies for emails.
Smartpings also helps with phone and email verifications. Developers might want their users’ emails and phone numbers to be verified by a third party, maybe to save time. Smartpings helps with that too.