I want to set the mailto app for google apps gmail. I tried editing the gecko...mailto.2.uritemplate as per instructions found on web (https://mail.google.com/a/MYDOMAIN/mail/?extsrc=mailto&url=%s. Set 3 related config values to "true" as per instructions (network.protocol-handler.expose.mailto ; network.protocol-handler.warn-external.mailto ; AND, third, gecko.handlerService.allowRegisterFromDifferentHost. Does not work, no Google Apps in the mailto app spot. Tried javascript method in address bar without success: javascript:window.navigator.registerProtocolHandler("mailto","https://mail.google.com/a/MYDOMAIN/mail/?extsrc=mailto&url=%s","Google Apps GMail") Any light anyone can shed will be appreciated. Cheers, jlf