diff --git a/app/mailers/user_mailer.rb b/app/mailers/user_mailer.rb
index 4b3c71f4..8cb5eed1 100644
--- a/app/mailers/user_mailer.rb
+++ b/app/mailers/user_mailer.rb
@@ -11,4 +11,9 @@ class UserMailer < ActionMailer::Base
     @reset_password_url = reset_password_internal_user_url(user, token: user.reset_password_token)
     mail(subject: t('mailers.user_mailer.reset_password.subject'), to: user.email)
   end
+
+  def got_new_comment(comment, user, commenting_user)
+    @commenting_user = commenting_user
+    mail(subject: t('mailers.user_mailer.got_new_comment.subject'), to: user.email)
+  end
 end
diff --git a/app/views/user_mailer/got_new_comment.slim b/app/views/user_mailer/got_new_comment.slim
new file mode 100644
index 00000000..3b8afa5b
--- /dev/null
+++ b/app/views/user_mailer/got_new_comment.slim
@@ -0,0 +1 @@
+== t('mailers.user_mailer.activation_needed.body', link: link_to(@activation_url, @activation_url))