How to send mail using mailchimp in codeigniter

To send mail using Mailchimp in CodeIgniter, you'll need to follow these steps:

Step 1: Set up your Mailchimp account

• Create a Mailchimp account and set up a new list.
• Get your API key from the Mailchimp dashboard.

Step 2: Install the Mailchimp PHP library

• You can install the Mailchimp PHP library using Composer: composer require mailchimp/mailchimp
• Alternatively, you can download the library from the Mailchimp GitHub repository and include it in your CodeIgniter project.

Step 3: Configure your Mailchimp API key in CodeIgniter

• In your CodeIgniter project, create a new file called mailchimp.php in the application/libraries directory.
• In this file, add the following code:

  
  <?php

class Mailchimp {

private $api_key;
private $list_id;

public function __construct($api_key, $list_id) {
    $this->api_key = $api_key;
    $this->list_id = $list_id;
}

public function send_email($email, $subject, $message) {
    // Set up the Mailchimp API client
    $client = new \Mailchimp\Mailchimp($this->api_key);

    // Set up the email campaign
    $campaign = array(
        'type' => 'regular',
        'recipients' => array(
            'list_id' => $this->list_id,
            'segment_opts' => array(
                'conditions' => array(
                    array(
                        'condition_type' => 'equals',
                        'field' => 'email',
                        'value' => $email
                    )
                )
            )
        ),
        'settings' => array(
            'subject_line' => $subject,
            'from_name' => 'Your Name',
            'from_email' => '[email protected]',
            'reply_to' => '[email protected]'
        ),
        'template' => array(
            'name' => 'Your Template Name',
            'sections' => array(
                array(
                    'content' => $message
                )
            )
        )
    );

    // Send the email campaign
    $response = $client->post('campaigns', array('campaign' => $campaign));

    // Check if the email was sent successfully
    if ($response->getStatusCode() == 200) {
        return true;
    } else {
        return false;
    }
}

}

**Step 4: Use the Mailchimp library in your CodeIgniter controller**

* In your CodeIgniter controller, create a new method that uses the Mailchimp library to send an email.
* For example:
```php
<?php

class My_controller extends CI_Controller {

    public function send_email() {
        $api_key = 'your_api_key';
        $list_id = 'your_list_id';
        $email = '[email protected]';
        $subject = 'Test Email';
        $message = 'This is a test email';

        $mailchimp = new Mailchimp($api_key, $list_id);
        if ($mailchimp->send_email($email, $subject, $message)) {
            echo 'Email sent successfully!';
        } else {
            echo 'Error sending email.';
        }
    }
}

That's it! With these steps, you should be able to send mail using Mailchimp in CodeIgniter.