Treasuremytext
First
register for an account at www.treasuremytext.com. After installing the app
on your iPhone the first time you try to Archive a message you will be
required to authorise it to use your account. Once authorised,
Treasuremytext for iPhone will present a list all your SMS. Tap one to
either Archive, Archive and Delete or just Delete. When archiving the SMS
gets uploaded over EDGE/WIFI to your Treasuremytext account.