Automatically mail send everyday in c

A classic task!

To send an email automatically every day using C, you'll need to use a library that allows you to interact with the email server and a scheduling library to run the program at a specific time. Here's a step-by-step guide:

Library requirements:

libcurl: a C library for transferring data over HTTP, which we'll use to send the email.
libmail: a C library for sending emails, which we'll use to construct and send the email.
cron: a scheduling library that allows you to run a program at a specific time.

Step 1: Install the libraries

On Linux or macOS, you can install the libraries using your package manager. For example, on Ubuntu or Debian:

sudo apt-get install libcurl4-openssl-dev libmail-dev

On Windows, you can download the libraries from their official websites and follow the installation instructions.

Step 2: Write the C program

Create a new C file, e.g., send_email.c, and add the following code:

#include <stdio.h>
#include <curl/curl.h>
#include <mail.h>

#define EMAIL_SUBJECT "Daily Report"
#define EMAIL_BODY "This is a daily report sent automatically."

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

    // Initialize curl
    curl_global_init(CURL_GLOBAL_DEFAULT);
    curl = curl_easy_init();
    if(curl) {
        // Set email server details
        curl_easy_setopt(curl, CURLOPT_URL, "smtp://your-email-server.com");
        curl_easy_setopt(curl, CURLOPT_USERNAME, "your-email-username");
        curl_easy_setopt(curl, CURLOPT_PASSWORD, "your-email-password");

        // Set email details
        mail = mail_new();
        mail_set_subject(mail, EMAIL_SUBJECT);
        mail_set_body(mail, EMAIL_BODY);

        // Send the email
        res = curl_easy_perform(curl);
        if(res!= CURLE_OK) {
            fprintf(stderr, "cURL error: %s\n", curl_easy_strerror(res));
        }

        // Clean up
        mail_free(mail);
        curl_easy_cleanup(curl);
    }
    curl_global_cleanup();

    return 0;
}

Replace your-email-server.com, your-email-username, and your-email-password with your actual email server details.

Step 3: Compile the program

Compile the program using:

gcc -o send_email send_email.c -lcurl -lmail

Step 4: Schedule the program to run daily

Use cron to schedule the program to run daily. Open your cron table in the editor:

crontab -e

Add the following line to schedule the program to run at 8:00 AM every day:

0 8 * * * /path/to/send_email

Replace /path/to/send_email with the actual path to your compiled program.

Step 5: Test the program

Save the changes to your cron table and wait for the program to run. You should receive an email with the subject "Daily Report" and body "This is a daily report sent automatically." every day at 8:00 AM.

That's it! You've successfully set up a C program to send an email automatically every day.

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Automatically mail send everyday in c