Checking your e-mail at set times during the day, ideally when it's quiet and you can focus on managing your inbox effectively, is a productive approach. This method helps in minimizing distractions and interruptions throughout the workday, allowing for better focus on tasks that require deep concentration. It also prevents the constant checking of e-mails from becoming a productivity pitfall. Of course, the optimal frequency might vary based on your specific job role and the nature of your work, but generally, a disciplined approach to e-mail management promotes efficiency and effectiveness.