iGroup SMS http://itunes.apple.com/us/app/igroup-sms/id377378452?mt=8# On top of iPhone OS 4.0, iGroup SMS provides one of the most useful feature - mass SMS, if you want to text one message to more than one contacts, this App is the choice for you. How to use: 1) create a contact group; 2) select one or more groups; 3) click "Next Step" to send. Is it that easy? Yes, it is. For sure, iGroup SMS app provides more powerful features for you, including: 1) Select contacts inside each group, and if there are more than one phone numbers in each contact, you can select it one by one; 2) Support sending history, and you can reuse the history sending contacts next time; 3) Support SMS template, you can create multiple templates (with fancy edit functions); 4) Embed contact group management functions if you still don't have a contact group management application, you can create/edit/delete group and add/remove contact into/from groups. Key notes: You MUST upgrade to iPhone OS 4.0 to support the final SMS sending step! ScreenShot below