SMS HTTP API is the most simplest and the scalable method of programming your SMS integration to your website or application.
Option 1 - http://www.smsitonline.com/engine/sendsms/1/un=xxxxxxx&pw=xxxx&to=xxxx&type=S&msg=xxxxxx
Option 2 - http://www.smsitonline.com/engine/sendsms/2/un=xxxxxxx&pw=xxxx&grp=xxxx&type=S&msg=xxxxxx
Spaces in "text" must be replaced with "+" mark or with "%20", passing the same above attributes as POST request is also supported.
Type refers to : S - SMSITOnline ID, C - Customer ID, D - Dynamic ID
un = Your user name
pw = Your account password
to = Recipient phone number in international format
grp = Contact group name
msg = Text message
The response structure is as follows;
001 - Invalid User Name
002 - Invalid User Password
003 - Invalid to number. It should be in 947XXXXXXXX format
004 - Invalid contact group name
005 - Insufficient credits, please purchase credits