Remember MySMS the cool SMS app via Cydia on 2.x. Well, the good news is that its now been updated, and it works on firmware 3.0 or higher. The app has all the features it did on 2.x. It has message forwarding, copy to notepad or email, message encryption, multiple viewing styles (inbox, sent or both) and much more. However, the app is paid, and the free version only allows you to send messages with a 30 second delay.
To download the app search for ‘Mysms’ on Cydia OR Icy.
App Description:
Landscape SMS! Send/Receive simple/encrypted SMS via iPhone/iPhone 3G