You can adjust how much social capital is awarded or deducted for specific actions at Settings > Defaults > Social Capital. It appears that some activities only display after they have occurred within a nation.
For example, Email received shows up on the list in my (truth) nation, but does not appear in the (howto) nation.
Full known list of activities where capital awarded is in the social capital HOWTO.
Thanks CJ - this is something we don't have a timeline on working on but will keep you posted!