Hi,
I just wanted to know if there is any way to send email using C program on Unix.

Thanks for your help!

Julie

Yes. They can go the easy way and execute sendmail using system("sendmail ..."), or it can connect to mail servers and such using TCP-sockets.

sample using mailx:

#include <stdlib.h>
#include <string.h>

#define cknull(x) if((x)==NULL) {perror(""); exit(EXIT_FAILURE);}
#define cknltz(x) if((x)<0) {perror(""); exit(EXIT_FAILURE);}
#define LIST_LEN 4

/******************************* 
* email_it() -
*  emails the contents of a file
*  parms 
*	char *filename - file to email
*  	email recipients are in the array email_list[][] 
*   which has to be terminated with a zero-length element
********************************/

void email_it(char *filename)                                           
{                                                                       
	char tmp[256]={0x0};                                                
	char fpBuffer[512]={0x0};                                           
	char email_list[LIST_LEN][256]={  {"username@somecompany.com"},             
							   {"username@somecompany.com"},             
							   {"username@anothercompany.com"},         
							   {0x0}};                                  
	int i=0;                                                            
																		
	for(i=0;*email_list[i]>0x0;i++)                                
	{		                                                            
		cknull(strcpy(tmp, email_list[i]));                             
		cknltz(sprintf (fpBuffer,                                       
			"/usr/bin/mailx -s '%s %s' %s < %s",                        
			"Please Review:",                                           
			filename,                                                   
			tmp,                                                        
			filename)); 	                                            
		if(system (fpBuffer)==(-1))                                     
		{                                                               
			perror("email failure");                                    
			exit(EXIT_FAILURE);	                                        
		}                                                               
	}	                                                                
}

you can also use popen() and print the content to the fp