>>>Most of the US cell phone providers offer a (free) method for emailing (through SMTP) messages to a cellphone (http://www.notepage.net/smtp.htm). I am using this and it works good, but it is not SMS.
>>>
>>>Does anyone have SMS built into their apps?
>>>
>>>Google has an SMS option for their calendar to get reminded and I want to find out id it is some thing I can do (and if I can do it for free)
>>>
>>>Any links or references on the topic would be appreciated.
>>>
>>>Thanks,
>>>Einar
>>
>>
>>I have just finished an SMS Texting app for a client, and it is an expensive proposition to do if you want control over what is happening. You must use a content aggregator and then be approved by each of the carriers you will be using to carry the SMS messages. If you google FREE SMS Gateways, you will find a few that will permit you to send them, but you get what you pay for.
>
>Is there a SMS Gateway to supports all cell phone carriers in the world?

Each of the content aggregators will support all carriers, We are currently provisioned on 12 carriers here in the US ( I think there are 17 total or so) and there are many more carriers world wide that we could use if necessary.