You should not be sharing emotions with your H, not telling him that you are hurt and need space. He doesn't care about you, and telling him these things gives him power AND adds to his guilt (which may make it harder for him to come back to you). The power should be going to you now. Tell us when you're hurting, but don't tell H. He is not your H, just keep remembering that. And remember NOT to listen to what he says, watch what he does. Look for consistency. If he does "X" three days in a row, you can be sure that's a pretty solid indication that "X" is an important thing to pay attention to.
Don't be so sure about the power of the dark, I got my H back the first time he had an A by finally saying I had enough and physically getting up to leave. He was completely head over heels in love with OW at that point, she was his "soul mate" and he was not wavering at all, until I reached my hand for the doorknob. He grabbed me in a bear hug and sobbed and begged me not to leave. I had reached a point where I was done. Problem was, I took him back too fast and he rebounded. Going dark works, that's why Michele uses it in her book.
I would just put a forwarding address on the package when it arrives, and do not reply. Him sending it to your house sounds to me like a control issue for him. He is trying to control the one thing he thinks he can control, you. Don't let him. He needs to learn to control himself, and you take care of you.
