For general information on using connectors and their operations in your ESB configurations, see Using a Connector . To download the connector, go to https://store.wso2.com/store/assets/esbconnector/yammer, and click Download Connector. Then you can add and enable the connector in your ESB instance.
Supported ESB Version
WSO2 ESB 4.9.0 supports this connector. You can download WSO2 ESB 4.9.0 from here.