Merge branch 'actions_in_the_inbox' into 'master'

app/helpers/emails_helper.rb

+module EmailsHelper
+
+  # Google Actions
+  # https://developers.google.com/gmail/markup/reference/go-to-action
+  def email_action(url)
+    name = action_title(url)
+    if name
+      data = {
+        "@context" => "http://schema.org",
+        "@type" => "EmailMessage",
+        "action" => {
+          "@type" => "ViewAction",
+          "name" => name,
+          "url" => url,
+          }
+        }
+
+      content_tag :script, type: 'application/ld+json' do
+        data.to_json.html_safe
+      end
+    end
+  end
+
+  def action_title(url)
+    return unless url
+    ["merge_requests", "issues", "commit"].each do |action|
+      if url.split("/").include?(action)
+        return "View #{action.humanize.singularize}"
+      end
+    end
+  end
+end

app/mailers/notify.rb

@@ -11,6 +11,7 @@ class Notify < ActionMailer::Base
   add_template_helper ApplicationHelper
   add_template_helper GitlabMarkdownHelper
   add_template_helper MergeRequestsHelper
+  add_template_helper EmailsHelper
 
   default_url_options[:host]     = Gitlab.config.gitlab.host
   default_url_options[:protocol] = Gitlab.config.gitlab.protocol

app/views/layouts/notify.html.haml

@@ -28,3 +28,4 @@
           You're receiving this notification because you are a member of the #{link_to_unless @target_url, @project.name_with_namespace, project_url(@project)} project team.
         - if @target_url
           #{link_to "View it on GitLab", @target_url}
+          = email_action @target_url

doc/integration/gitlab_buttons_in_gmail.md

+# GitLab buttons in gmail
+
+GitLab supports [Google actions in email](https://developers.google.com/gmail/markup/actions/actions-overview).
+
+If correctly setup, emails that require an action will be marked in Gmail.
+
+![gitlab_actions](gitlab_actions.png)
+
+To get this functioning, you need to be registered with Google.
+[See how to register with google in this document.](https://developers.google.com/gmail/markup/registering-with-google)
+