I'm not going to dissect this email piece by piece, but from personal sources this is largely fact. I can't verify numbers, but a well placed officer would be easily able to gather data like this from open sources. (A public affairs oficer in country, for example)

There is a constant level of disgust within the military (PERSONAL OBSERVATION FROM ONE NCO, NOT OFFICIAL POLICY) for the reporting that has been getting to the states. They constantly report on the casualties, but you never read about the village that now has running water for the first time in 30 years, the schools that have been rebuilt by coalition forces, etc. Watching CNN you would get the picture that we're hated in Iraq and we need to leave. Talk to the troops coming back and it's a different picture entirely.