According to studies by both HubSpot and MailChimp, the best times to send emails are in the morning, in the hours between 8 AM and 11 AM. During these hours, most people are more likely to be checking their emails and are therefore more likely to open and read your emails. The best days to send emails are weekdays, particularly Tuesdays and Wednesdays. Weekends are the worst time to send emails, especially Saturdays.