I'd like to include user validation in my web app, to prevent the user from creating many accounts.
For example, when a new user signs up, they must enter a mobile phone number, receive an SMS, then enter a confirmation code.
Is there a service or API out there that automates/simplifies this process?
Thanks!
Clickatell is a popular SMS gateway. It works in 200+ countries.
Their API offers a choice of connection options via: HTTP/S, SMPP, SMTP, FTP, XML, SOAP, COM Object.
The HTTP/S method is as simple as this: http://api.clickatell.com/http/sendmsg?to=NUMBER&msg=Message+Body+Here (Clickatell API Guide).
The SMTP method consists of sending a plain-text e-mail to: [email protected], with the following body:
user: xxxxx
password: xxxxx
api_id: xxxxx
to: 448311234567
text: Meet me at home
You can also test the gateway for free from your browser: "Test SMS Gateway"
ZeepMobile is a free service. I believe with the free stuff, it places a short ad at the end of the message, but that shouldn't matter if you're just sending a confirmation code.
That might save you some money, but ZeepMobile isn't for every application. Take a look at it, you may be able to fit it for your purposes: