Traditional thought has long centered around sending emails Tuesday through Thursday mornings between 8 a.m. and 10 a.m. Conventional wisdom and past studies have shown that these hours are when many people read their emails. However, more recent studies have since pointed to other optimal times.One cross-industry report found unique open rates averaged 21.7 percent between 8 p.m. and 11:59 p.m., and 17.6 percent between midnight and 4 a.m. Those night owls also had the highest cli [...]