agenda-libre-ruby/test/mailers/previews/note_mailer_preview.rb

# Preview all emails at http://localhost:3000/rails/mailers/note_mailer
class NoteMailerPreview < ActionMailer::Preview
  # Preview this email at http://localhost:3000/rails/mailers/note_mailer/create
  def create
    ActionMailer::Base.default_url_options[:host] = 'localhost:3000'
    NoteMailer.create Note.last
  end
end