Late morning is the best time to send an email to your customers. 10 a.m. - 11 a.m. is considered the u003cstrongu003egolden hour for your email marketing strategyu003c/strongu003e. Most people are traveling to work and are using their mobile phones or laptops. They are more likely to open your message rather than early in the morning. Some researchers also believe that 8 p.m. to midnight is a good time to send emails, especially if you are an entertainment company.