Modern Dilemma - Late night emails

Moral dilemma: Dear Caro and Corrie I am a small business owner in the creative industry and I do a lot of work at night. Is it okay to send my team emails outside of office hours. I get the feeling my staff don’t appreciate receiving my emails on weekends or at night, yet it’s often when I do my best work. Thank you for your advice, Slavedriver from Clifton Hill