For this study, MailChimp analyzed the open rates for over 200 million emails. Open rates ranged from an amazing 93% to a dismal 0.5%. Many factors affect how an email is viewed such as frequency, sender, and the nature of the message.
The best email subject lines are short, descriptive, and provide the reader with a reason to explore your message further. Attempts to stand out in the inbox by using splashy or cheesy phrases will invariably result in your email being ignored.