Systems and methods for routing activity information related to objects in an external application to activity feeds associated with users in a collaboration group are disclosed. When activity information is received, it is routed to collaboration group feeds and user feeds based on a set of routing tables. The routing tables associated objects with events, containers, collaboration groups, and finally users. Based on the routing tables, users who belong to a collaboration groups that are associated with a particular object may see the activity information about that object rendered in an activity feed if the external application grants them permission to access the object. Accordingly, security associated with the object in the external application can be maintained when event information about that object is shared in an activity feed in a collaboration system.