/**
  * Show a list of entries per project
  *
  * @param Project $project
  * @return \Illuminate\Http\Response
  */
 public function indexPerProject(Project $project)
 {
     // @todo: add repo?
     $mailStatistics = $project->mailStatistics()->newestGrouped()->paginate($this->perPage);
     return view('mail-stats::mail-statistics.index-per-project', compact('project', 'mailStatistics'));
 }