final JsonArrayBuilder json = Json.createArrayBuilder();
for (final String email : emails) {
json.add(email);
}
final List<JsonObject> array = this.request.method(Request.POST)
.body().set(json.build()).back()
.fetch().as(RestResponse.class)
.assertStatus(HttpURLConnection.HTTP_CREATED)
.as(JsonResponse.class)
.json().readArray().getValuesAs(JsonObject.class);
final Collection<String> result = new ArrayList<String>(array.size());