Update Email from GitLab docs

doc/tools/email.md

 # Email from GitLab
 
-## Overview
+>**Note:**
+Available in [GitLab Enterprise Edition Starter][ee].
 
 As a GitLab administrator you can email GitLab users from within GitLab.
 
+## Overview
+
+GitLab provides a simple tool to email all users or users of a chosen group or
+project right from the admin area. Users will receive the email to their primary
+email address.
+
 ## Use-cases
 
 - Notify your users about a new project, a new feature, or a new product launch.
 - Notify your users about a new deployment, or that will be downtime expected
-for a particular reason.
+  for a particular reason.
 
-## Description
+## Sending emails to users from within GitLab
 
-In the administrator interface, go to `Users`. Here you will find the button to email users:
+1. Go to the admin area using the wrench icon in the top right corner and
+   navigate to **Overview > Users > Send email to users**.
 
-![admin users](email1.png)
+    ![admin users](email1.png)
 
-Here you can simply compose an email.
+1. Compose an email and choose where it will be sent (all users or users of a
+   chosen group or project):
 
-![compose an email](email2.png)
+    ![compose an email](email2.png)
 
-Which will be sent to all users or users of a chosen group or project.
+## Unsubscribing from emails
 
-![recipients](email3.png)
-
-## Note
-
-User can choose to unsubscribe from receiving emails from GitLab by following the unsubscribe link from the email.
-Unsubscribing is unauthenticated in order to keep the simplicity of this feature.
+User can choose to unsubscribe from receiving emails from GitLab by following
+the unsubscribe link from the email. Unsubscribing is unauthenticated in order
+to keep the simplicity of this feature.
 
 On unsubscribe, user will receive an email notifying that unsubscribe happened.
-Endpoint that provides unsubscribe option is protected by request being rate-limited.
+The endpoint that provides the unsubscribe option is rate-limited.
+
+[ee]: https://about.gitlab.com/gitlab-ee/