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.
We have integrated Slack from CPI and the interface is working fine so far. Now, client wants to post some messages to few particular users in Slack. Can you suggest which method/group needs to be used ?