This is done in ssb-about
. It doesn't unbox private messages at the moment. You could add that by modifying https://github.com/ssbc/ssb-about/blob/master/index.js#L34-L37
I didn't do this because I have kind of been waiting for @Dominic to add unboxing directly to the flume indexing so it doesn't have to be done for each index (which is a bit inefficient).
However, I did add unboxing to ssb-backlinks
because it was necessary to do likes and and replies to private messages. It also had the interesting side effect of including private messages in the channels view. So I am definitely open to this for ssb-about
too!