A new study from email marketing company Omnisend has found that the most effective days of the week to send emails are Tuesday and Friday. The beginning of the month had the best email performance, while 2 pm, 5 pm, or 8 pm were the best times of day to send.

According to the study, which analysed emails sent by businesses from January 2019 to January 2023, Tuesday has an average open rate of 11.36%, but Wednesday and Thursday are very close with 11.33% and 11.29%, respectively. On Friday, the open rates are a bit lower, at 11.07%. However, the conversion rates are significantly higher than on any other day of the week, at 5.74%.

Greg Zakowicz, a senior email marketing expert at Omnisend, said: "Knowing a good time to send email can help businesses get the best results from their well-crafted email campaigns. Because businesses are in constant competition for consumers time, the attention to detail is crucial."

Zakowicz suggests testing different days to see which works best for individual brands, noting that some companies have found success sending out emails on low-competition days like Sundays.

"However, it goes without saying: email timing is just one of many factors that can influence your campaign performance. A well-crafted email sent at the wrong time can perform better than a rushed email sent at the perfect time," said Zakowicz.

Zakowicz said other strategies to improve email marketing include optimising email frequency, understanding the target audience, and leveraging email automation.