def send_acceptance_emails
    event = Event.find(params[:id])
    @email = event.generate_acceptances_email
    @templates = [{subject: 'Zusage 1', content: 'Lorem Ispum...'}, {subject: 'Zusage 2', content: 'Lorem Ispum...'}, {subject: 'Zusage 3', content: 'Lorem Ispum...'}]
    render :email