A low open rate can be attributed to several factors. First, consider the subject line. If it is not engaging or relevant, recipients are unlikely to open the email. Second, the timing of your email can significantly affect open rates. Sending emails at a time when your audience is unlikely to check their inbox can lead to poor performance. Lastly, the sender name plays a critical role. If recipients do not recognize or trust the sender, they are less likely to open the email.