With my personal T our emails have mostly been about scheduling. Although I will send him an email saying I'm having a major anxiety and need to schedule an appointment and he gets back to me right away. He also sent an email saying he was proud of me after a very intense session.

My young child sees a T and he highly encourages me to contact him by text or email between sessions. He wants follow-ups to certain activities that my child was scheduled for to know how it went. I will also occasionally send an email asking him for parenting advice, but I try to keep it to a minimum and only if I need an answer before the next session.