Typing an email (that isn't going to be responded to) is a little like writing in a journal and that is a good thing. You are working/thinking about what you're writing about and that is what therapy is about, not the other person and what they may or may not say and do. Therapy is us examining our lives so they make sense to us. Therapists are just along for the ride and to offer encouragement and a few pointers (since they've helped others before and done the job for themselves) while we work.