How to mail in c

In C, you can use the mail() function from the mail.h header file to send an email. Here's a basic example of how to use it:

#include <mail.h>

int main() {
    mail("[email protected]", "Subject", "Body");
    return 0;
}

This will send an email to [email protected] with the subject "Subject" and the body "Body". However, this is a very basic example and doesn't include many features that a real email client would have.

The mail() function is not a standard C function and is not available on all platforms. It's also not a good idea to use it in a real-world application because it's not secure and doesn't support many features that you would expect from an email client.

If you need to send emails in a C program, you're better off using a library that's designed for that purpose, such as libcurl or libmail. These libraries provide more features and are more secure than the mail() function.

Here's an example of how you could use libcurl to send an email:

#include <curl/curl.h>
#include <string.h>

int main() {
    CURL *curl;
    CURLcode res;

    curl_global_init(CURL_GLOBAL_DEFAULT);
    curl = curl_easy_init();
    if(curl) {
        curl_easy_setopt(curl, CURLOPT_URL, "smtp://smtp.example.com");
        curl_easy_setopt(curl, CURLOPT_USE_SSL, CURLUSESSL_ALL);
        curl_easy_setopt(curl, CURLOPT_USERNAME, "username");
        curl_easy_setopt(curl, CURLOPT_PASSWORD, "password");
        curl_easy_setopt(curl, CURLOPT_MAIL_FROM, "<[email protected]>");
        curl_easy_setopt(curl, CURLOPT_MAIL_RCPT, "<[email protected]>");
        curl_easy_setopt(curl, CURLOPT_READDATA, "Hello, world!");
        curl_easy_setopt(curl, CURLOPT_READFUNCTION, NULL);
        res = curl_easy_perform(curl);
        if(res!= CURLE_OK) {
            fprintf(stderr, "cURL error: %s\n", curl_easy_strerror(res));
        }
        curl_easy_cleanup(curl);
    }
    curl_global_cleanup();
    return 0;
}

This example sends an email to [email protected] from [email protected] using the smtp.example.com SMTP server. The email body is "Hello, world!".