I definitely do this--a bit with T--though she often won't respond--and usually with marriage counselor--he usually does respond, though it can take anywhere from just a couple hours to a few days. Or sometimes, he hasn't had a chance to read it before our session. So you're not alone! It's gotten a bit better, unless I send something where I'm pouring out really personal thoughts/feelings or saying that I'm upset with one of them. Then that worry about rejection is still there...