Java call not returning author.email, but the studio api browser does

I am doing an api call with a java client and executing the following query using api v2:

SELECT id, body, view_href, subject, author.email FROM messages WHERE replies.count(*) = 0 AND depth = 0

When I look at the author.email field it comes back empty. If I do the same query in the studio api browser the email is returned. Can anyone think of why this would happen? All the other values are coming back.

api browser:

{
"status" : "success",
"message" : "",
"http_code" : 200,
"data" : {
"type" : "messages",
"list_item_type" : "message",
"size" : 1,
"items" : [ {
"type" : "message",
"id" : "58",
"view_href" : "/t5/Welcome-Board/asdsada/m-p/58#M36",
"author" : {
"type" : "user",
"email" : "blah@blah.com"
},
"subject" : "asdsada",
"body" : "<P>asdasdasdasd</P>"
} ]
},
"metadata" : { }
}

java code:

{
   "metadata":{

   },
   "http_code":200,
   "data":{
      "size":1,
      "list_item_type":"message",
      "type":"messages",
      "items":[
         {
            "author":{
               "type":"user",
               "email":""
            },
            "subject":"asdsada",
            "id":"58",
            "href":"/messages/58",
            "type":"message",
            "body":"<P>asdasdasdasd<\/P>",
            "view_href":"http://stage-community.zuora.com/t5/Welcome-Board/asdsada/m-p/58#M36"
         }
      ]
   },
   "message":"",
   "status":"success"
}