Send E-Mail in C++ - c++

Question

Im trying to send an email in C++. I found the class CSmtp which looks like a fine one.So I tried out the example project but it gives the ErrorCode :
Error: Undefined error id.
Now I tried to find out where the problem is because the errorcode is too general.I Debuged the project find this Errorcode
ErrorCode WSA_SELECT (109) ECSmtp::CSmtpError
I googled after it but found no answer.Someone can help ?
Link for class : CSmtp with SSL/TLS
Code:
#include "CSmtp.h"
#include <iostream>
int main()
{
bool bError = false;
try
{
CSmtp mail;
#define test_gmail_tls
#if defined(test_gmail_tls)
mail.SetSMTPServer("smtp.gmail.com",587);
mail.SetSecurityType(USE_TLS);
#elif defined(test_gmail_ssl)
mail.SetSMTPServer("smtp.gmail.com",465);
mail.SetSecurityType(USE_SSL);
#elif defined(test_hotmail_TLS)
mail.SetSMTPServer("smtp.live.com",25);
mail.SetSecurityType(USE_TLS);
#elif defined(test_aol_tls)
mail.SetSMTPServer("smtp.aol.com",587);
mail.SetSecurityType(USE_TLS);
#elif defined(test_yahoo_ssl)
mail.SetSMTPServer("plus.smtp.mail.yahoo.com",465);
mail.SetSecurityType(USE_SSL);
#endif
mail.SetLogin("* My Email Adress *");
mail.SetPassword("*Password*");
mail.SetSenderName("User");
mail.SetSenderMail("* My Email Adress *");
mail.SetReplyTo("* Email Adress of my friend *");
mail.SetSubject("The message");
mail.SetXPriority(XPRIORITY_NORMAL);
mail.SetXMailer("The Bat! (v3.02) Professional");
mail.AddMsgLine("Hello,");
mail.AddMsgLine("");
mail.AddMsgLine("...");
mail.AddMsgLine("How are you today?");
mail.AddMsgLine("");
mail.AddMsgLine("Regards");
mail.ModMsgLine(5,"regards");
mail.DelMsgLine(2);
mail.AddMsgLine("User");
//mail.AddAttachment("../test1.jpg");
//mail.AddAttachment("c:\\test2.exe");
//mail.AddAttachment("c:\\test3.txt");
mail.Send();
}
catch(ECSmtp e)
{
std::cout << "Error: " << e.GetErrorText().c_str() << ".\n";
bError = true;
}
if(!bError)
std::cout << "Mail was send successfully.\n";
return 0;
}

Answer 1

I would suggest you to go with powershell script for sending email and then call that script from your c++ program. Use smtp.gmail.com as server & 465 port. :)
This can help..
https://github.com/udit043/Send-email-using-powershell

Answer 2

Standard C++11 does not have such facilities (but your particular OS might provide additional SMTP client libraries). Maybe you want a library like vmime or a framework like POCO
Notice that the very ability of email is operating system specific.
Also, most SMTP servers are configured to reject open mail relaying (otherwise, they would be used by spam bots, and emails going thru them would be rejected since blacklisted).
You could for example configure some SMTP service on your local machine or server, and programmatically send email thru localhost (then the SMTP server would spool and relay the email, etc.) - or to some specific and well-defined "smarthost" if your system and network has one; you probably don't want to wire-in some SMTP relay host names in your program, and you do want the email to be spooled (not lost!) if the recipient SMTP server is down or unreachable; in other words, you need some SMTP server.
You certainly don't want to code your SMTP server from scratch!
Hence, your program should only send SMTP to some trusted host, which is correctly configured to avoid spamming (then you might need to set some From or Reply-To SMTP header to something appropriate for your SMTP host). Be sure that major Internet companies like Google, Yahoo, AOL etc... are configuring carefully their SMTP service to disallow open relay spamming. Often, they accept SMTP relay connections only from their business clients (and they would cut a client doing automated spamming). So you should send SMTP to your ISP's SMTP server (or to some local or near SMTP server).
Notice that spamming is usually forbidden by law or by your ISP terms of service.
You could also run some command (e.g. using popen) to send mail ...