How to send an email with Mandrill using a SugarOutfitters Webhook for a SugarCRM Add-on Sale

webhook-receiver.php

<?php

// load up mandrill
require_once('vendor/mandrill/src/Mandrill.php');
define(MANDRILL_APIKEY,'MANDRILL_API_KEY_GOES_HERE');

// get the webhook response
// decode the json data into a php object
$body = @file_get_contents('php://input');
$response = json_decode($body);

// the webhook property tells us exactly which webhook event was fired
// so let's create a case for a few webhooks
switch ($response->webhook)
{
    case 'sale_new':
        // Someone purchased your add-on
        SugarOutfittersHelper::sale_new($response);
        break;
}
 
class SugarOutfittersHelper
{
    public static function sale_new($response)
    {
        $addon = $response->data->addon; // the addon that was purchased
        $lineitem = $response->data->lineitem; // we give you the lineitem because you may have multiple purchase plans for an add-on
        $member = $response->data->member; // your new customer!
        $licensekey = $response->data->licensekey; // if you're using SugarOutfitters lincense keys, the details of the license key are listed here
 
        // let's send them an email
        try 
        {
            $mandrill = new Mandrill(MANDRILL_APIKEY);

            $message = array(
                'text' => "Hi there, thanks for giving SugarChimp a try.\n\nDo you have any questions about the integration?\n\nCheers!\nChad",
                'subject' => 'MailChimp & Sugar Integration',
                'from_email' => 'chad@sugarchimp.com',
                'from_name' => 'Chad Hutchins',
                'to' => array(
                    array(
                        'email' => $member->email,
                        'type' => 'to'
                    )
                ),
                'headers' => array('Reply-To' => 'chad@sugarchimp.com'),
                'tags' => array('onboarding-welcome'),
            );

            $mandrill->messages->send($message);
            echo "Email sent.<br>";
        } 
        catch(Mandrill_Error $e) 
        {
            // Mandrill errors are thrown as exceptions
            echo 'A mandrill error occurred: ' . get_class($e) . ' - ' . $e->getMessage() . "<br>";
            // notify or log this
        }
    }
}