title: Didn't get Gerrit review email
body: <p>I am using Gerrit2.4.2. My account is an administrator, also in Reviewer and Verifier groups(I created these two groups manually).
  In All-Projects, I allow Reviewer group to review /ref/* and Verifier to submit /ref/*.
  See my diagram below:
  <img src="https://i.stack.imgur.com/02dN8.png" alt="All-Projects Access right settings"></p>
  
  <p>We have a project named as appengine. Also have a group called 'appengine team'. This group has two memebers: another developer and me.</p>
  
  <p>Now another developer added a test file and pushed it to HEAD:refs/for/master. But I didn't get any email notification. After he logged into the Gerrit web site and found his change issue.
  And added my email manually, I could see the email notification and also could see the change issue in web site.
  <img src="https://i.stack.imgur.com/uEC1S.png" alt="Now the reviewer input is empty"></p>
  
  <p>My project's settings look like so:
  <img src="https://i.stack.imgur.com/thUsL.png" alt="enter image description here"></p>