I am in an ongoing court dispute and what I do is a take the text message and screen capture them by pressing the power key and the home key at the same time. This puts the image of the text message into your camera roll in photos. Then just share them and email them to yourself.

One thing about Phoneview--I love the program and the developer is awesome, however, due to a peculiarity to how timestamps on SMS messages work, it does get SMS messages out of order from time to time. The developer wrote a patch just for me to try to fix this, but even with all he could do, he couldn't fix them because of the actual timestamps on the messages--so beware!