SAPO is a Portuguese Internet service provider whose main web site acts as a web portal featuring a directory of Portuguese sites. SAPO Services provides a large suite of web services and applications to developers worldwide.
Sapo Alerts service allows users to subscribe to events and receive notifications as they happen in various formats including email, SMS and IM/XMPP. Functionality includes adding and activating subscriptions, retrieving destinations lists and event details, removing users and more. The API uses SOAP protocol and responses are formatted in XML.