Simple SMS for iPod touch.
Send and receive standard SMS messages with your iPod touch to any kind of mobile phone from anywhere with a WiFi connection. iPhones can also use 3G.
The recipient does not need a smartphone or any kind of software, and there is no need to know the name of their carrier.
You can receive SMS replies in 2 different ways: direct to the app, and/or via email - immediately, if you subscribe to a push-email service such as MobileMe, Gmail or Yahoo.
Supported SMS Gateways
Simple SMS uses bulksms.com 2-way SMS gateways. A BulkSMS account has no monthly or setup fees, and supports over 800 networks in 166 different countries. Check out the SMS pricing and service availability for your country on the BulkSMS website. Note: Simple SMS uses 'Standard' routes.
Setting up your BulkSMS account
See the Setup and User Guides for important account setup details, usage instructions and support information.
There are also other SMS apps, including iPad versions - see Which app is right for me?