The time of day when you send your emails also plays a crucial role. Studies have shown that emails sent early in the morning (between 8 AM and 10 AM) and late in the afternoon (around 4 PM) tend to perform better. This is because people often check their emails at the beginning and end of their workday. However, it's essential to consider the time zones of your target audience to ensure your emails hit their inboxes at the right time.