Send an attachment with an EE email - change the attachment location. Add this to the custom files add on (custom_functions.php)

EE email attachment

function event_espresso_send_email($params) {
		global $org_options;
		do_action('action_hook_espresso_log', __FILE__, __FUNCTION__, '');
		extract($params);
		//Define email headers
		$headers = "";
		if ($org_options['email_fancy_headers']=='Y') {
			$headers .= "From: " . $org_options['organization'] . " <" . $org_options['contact_email'] . ">\r\n";
			$headers .= "Reply-To: " . $org_options['organization'] . "  <" . $org_options['contact_email'] . ">\r\n";
		} else {
			$headers .= "From: " . $org_options['contact_email'] . "\r\n";
			$headers .= "Reply-To: " . $org_options['contact_email'] . "\r\n";
		}
		$headers .= "Content-Type: text/html; charset=utf-8\r\n";
		//Debug
//		 echo '<br/><br/><br/><br/>';
//		  echo '<p>$headers = '.$headers.'</p>';
//		  echo '<p>$send_to = '.$send_to.'</p>';
//		  echo '<p>$email_subject = '.$email_subject.'</p>';
//		  echo '<p>$email_body = '.$email_body.'</p>';
//		  echo '<p>'.$email_body.'</p>';
//		 echo '<br/><br/><br/><br/>';

//CHANGE THIS!!
$attachments = array( WP_CONTENT_DIR . '/uploads/2013/12/hat.png' );

		return wp_mail($send_to, stripslashes_deep(html_entity_decode($email_subject, ENT_QUOTES, "UTF-8")), stripslashes_deep(html_entity_decode(wpautop($email_body), ENT_QUOTES, "UTF-8")), $headers, $attachments);
	}