title: Bitbucket server: Send email when pushing a commit that modifies files inside a specific folder
body: <p>Is there any way to send an email when someone pushes one or more commits that modifies files inside a folder?</p>
  
  <p>I have a folder with files that contain generic code that shouldn't be changed in most of the commits. But if someone pushes a change on those files, I would like to trigger an email/slack notification.</p>
  
  <p>Is it possible to do with BitBucket server? maybe is there a plugin that allows me to do that?</p>