It's entirely possible that he's away someplace where he doesn't have cell (out of the country) or WiFi access, so he hasn't seen your email. My T also allows email contact while he's away, and he told me that on that trip, he didn't know if he'd have WiFi. This tiny part of me wondered if he wasn't being honest, but then the Monday he got there, he emailed me to let me know he did in fact have WiFi. I really hope your T isn't lying to you.