Don't notify user for deploy keys, feedback:

app/controllers/admin/deploy_keys_controller.rb

@@ -10,7 +10,7 @@ class Admin::DeployKeysController < Admin::ApplicationController
   end
 
   def create
-    @deploy_key = deploy_keys.new(deploy_key_params)
+    @deploy_key = deploy_keys.new(deploy_key_params.merge(user: current_user))
 
     if @deploy_key.save
       redirect_to admin_deploy_keys_path

app/models/deploy_key.rb

@@ -28,4 +28,10 @@ class DeployKey < Key
   def can_push_to?(project)
     can_push? && has_access_to?(project)
   end
+
+  private
+
+  # we don't want to notify the user for deploy keys
+  def notify_user
+  end
 end

app/models/key.rb

@@ -49,10 +49,6 @@ class Key < ActiveRecord::Base
     )
   end
 
-  def notify_user
-    run_after_commit { NotificationService.new.new_key(self) }
-  end
-
   def post_create_hook
     SystemHooksService.new.execute_hooks_for(self, :create)
   end
@@ -78,4 +74,8 @@ class Key < ActiveRecord::Base
 
     self.fingerprint = Gitlab::KeyFingerprint.new(self.key).fingerprint
   end
+
+  def notify_user
+    run_after_commit { NotificationService.new.new_key(self) }
+  end
 end