Again, the answer to this question varies from company to company. And again, testing is the way to find out what works best. Typically, weekends and mornings seem to be times when multiple emails are opened, but since your audience may have different habits, it's best to experiment and then use your data to decide.
For multiple readers，推荐阅读搜狗输入法2026获取更多信息
63-летняя Деми Мур вышла в свет с неожиданной стрижкой17:54。业内人士推荐91视频作为进阶阅读
Овечкин продлил безголевую серию в составе Вашингтона09:40。关于这个话题，同城约会提供了深入分析
PST — 6 a.m.