demarches-normaliennes/app/mailers/devise_user_mailer.rb

# Preview all emails at http://localhost:3000/rails/mailers/devise_user_mailer
class DeviseUserMailer < Devise::Mailer
  helper :application # gives access to all helpers defined within `application_helper`.
  include Devise::Controllers::UrlHelpers # Optional. eg. `confirmation_url`
  layout 'mailers/layout'

  def template_paths
    ['devise_mailer']
  end
end