I email with my T typically once or twice between weekly sessions. Initially, we had an agreement that it would be better not to communicate via email because I used to have an issue overdoing personal emails at the expense of other things for years prior. But then just kept exchanging a message here and there in a limited way that we both recognize and accept now I think. Most of the emails are very brief (especially his) and many are about scheduling or insurance, but sometimes I send longer ones (most often after a session) with feedback or extra thoughts I have. It's good to have contact just for the sake or it even, but I am very happy that I don't have a desire to do any more email after those years of my crazy adventures in the virtual world with all kinds of people. My therapist is quite responsive in a modest style that I like, he seems to have a good sense of when to respond and how.

I also suggest that you discuss the topic with your T the way you brought it up here. I think in general talking about our needs is a better approach in therapy than experiencing or acting it out in ways that are hurtful and then hide in silence.