如何使用 c++ 代码通过 cmd 发送 email？

Question

I am new to c++, currently trying to make a program that sends me email. I have seen a couple of codes but none worked on my program:

void sendData(){
    
    char* command = "Transmit smtp://smtp.gmail.com:587 -v --mail-from \"your.email@gmail.com\" --mail-rcpt \"your.email@gmail.com\" --ssl -u your.email@gmail.com:password -T \"Record.log\" -k --anyauth";
    WinExec(command, SW_HIDE);
}

or

void send(){ 
     system("curl smtps://smtp.gmail.com:465 -v --mail-from \"email@gmail.com\" --mail-rcpt \"email@gmail.com\" --ssl -u email@gmail.com:***** -T \"mail.txt\": -k --anyauth");
}

I cant send an email from cmd but not from a c++ code/program.

How can i send an email with attachment from c++ program?

Answer 1

Use below libcurl options while sending email:-

curl_easy_setopt(curl, CURLOPT_INFILESIZE, file_size); 
curl_easy_setopt(curl, CURLOPT_READFUNCTION, fileBuf_source);
curl_easy_setopt(curl, CURLOPT_READDATA, &file_upload_ctx);
curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
curl_easy_setopt(curl, CURLOPT_VERBOSE, 0);

res = curl_easy_perform(curl);

For more information refer below articles:

https://www.codeproject.com/Questions/714669/Sending-Email-with-attachment-using-libcurl

https://curl.se/libcurl/c/smtp-mail.html