My T ALWAYS replies to emails. Many moons ago, we agreed that she would reply - something short and simple (more of an acknowledgement of receipt). Depending on the content of the email and my state of mind, she might write back something encouraging or validating. But I never expect anything other than: got your email.

And I usually start session by giving her things to read; sometimes I find it hard to start, sometimes I find it hard to talk about certain things, and sometimes it's just easier to hand in a written form of my thoughts and experiences.

Good luck!