Example code to send text messages written in C#.

using System.Web.Mail;
.
.
.
string toPhoneNumber = "DestinationPhoneNumber";
string login = "YoureIPIPIUsername";
string password = "YourPassword";
string compression = "Compression Option goes here - find out more";
string body = "Your Message";

System.Web.Mail.MailMessage mail = new System.Web.Mail.MailMessage();
mail.To = toPhoneNumber + "@sms.ipipi.com";
mail.From = login + "@ipipi.com";
mail.Subject = compression;
mail.Body = body;
mail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate", "1");
mail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusername", login);
mail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendpassword", password);

System.Web.Mail.SmtpMail.SmtpServer = "ipipi.com";
System.Web.Mail.SmtpMail.Send( mail );

Note:
This implementation requires .Net Framework version 1.1 or higher.