If so, you need SAP Universal ID. In a few months, SAP Universal ID will be the only option to login to SAP Community. Without it, you will lose your content and badges. If you have multiple accounts, use the Consolidation Tool to merge your content.
I have to implement on a EP6 SP11 a SSO to Notes R5 webmail.
The R5 webmail is working fine inside the EP6 but I couldn't find any documentation of how to implement a SSO to Notes webmail, just to groupware functions.