We're testing this on 3.6.7_pl1. I was able to send a test request to a single leader group.
My second request was to a multiple user group, and I was going to come back and report if it worked but...
Code:
Fatal error:
* Exalted_Leader has exceeded their stored private messages quota and can not accept further messages until they clear some space.
Unable to proceed with save while $errors array is not empty in class vB_DataManager_PM in /includes/class_dm.php on line 765
Of course, we don't let anyone be called exalted leader, but it was a name with an underscore in the middle.
I'm going to tell this guy to clear his box and try again, but I though that error might be interesting anyway.
You rock.