You have 3 options, use a gsm modem and pay a phone company for its service, pay for a sms gateway in which the company that you pay for that will give you api examples.
or the most practical is to send emails to the SMSEmail gateways, the only problem with this option is there is a different Email address for each phone carrier, EX att is email@example.com where the x's are the phone number.
Find out more about the gateway you are registered with. I've done something similar using the Clickatell Gateway. Any of the popular gateway would have a 'Developers' section on their website where you can find information about different types of technologies/ways you can use for using their gateway and create your custom application.
Download the API's. They would have examples as well, and try it out.
i am aravind and i am new for this blog. I want a small info. How can i create my own sms portal. I dont want to buy and 3 rd party service. I want to create my own and i want to send bulk sms for my clients. Is there is any one know means please help me.. Please also convey me to my mail id [email]SNIPPED[/email]
The idea is at some point you have to interface with the wireless carriers. A gateway is a must, that's how its done. Now if you want tocreate your own gateway, then you have to contact the business departments of all the Wireless Phone companies you want to support and go from there.
But the easiest method is to use email gateways already provided by the phone companies. firstname.lastname@example.org for att. That's how I do it on my site. I have a contact form that allows you to choose email or txt message. I just have a simple if statement that switches out the addy and poof. Easy simple solution.
But if you are really looking to start your own business as a wireless text gateway provider, Looking around in a C# forum isn't going to help you. To handle a serious load you are going to need a team of programmers and custom equipment somewhere near a phone hub.
Text messages are sent using a complicate process that has nothing to do with the internet or standard computer technologies. It all happens on the wireless phone provider's network.
If you have an sms gateway software you should develop an api to create a c# app. It is not to difficult.
In the following website you can find how to use the Ozeki API, i hope this example will helps you out or gives you idea how to write your own app: <URL SNIPPED>