Depression Support Group
Depression is a real and debilitating condition that is often misunderstood by family and friends. Its meaning can range from a prolonged period of sadness to an actual mental illness with specific symptoms. Find and share experiences with others who are going through the same struggles.

In my case, I did eventually get the message, even though it took a while.
But I notice that you respond to his emails, and get yelled at (over email? phone? in person?) Point being we have to razz you a bit for still communicating with him.
That said, my ex would occasionally answer, and listen, but in a more placating or humoring way. She didn't engage in any of the misery talk. So it might work.
OK, my point is, it takes time, and if you don't want to hear from him, don't engage him.