Fuel email driver: Save email to file

file.php

<?php

class Email_Driver_File extends \Email_Driver
{
	/**
	 * File send: Save email to file
	 *
	 * @return  bool    Success boolean.
	 */
	protected function _send()
	{
		$now = time();
		$message = $this->build_message();

		$to = static::format_addresses($this->to);
		$content = <<<TXT
To: {$to}
Subject: {$this->subject}
Header: {$message['header']}
Body: {$message['body']}
TXT
		;
		
		$hash = hash('sha256', "{$now}_{$content}");
		\File::create(APPPATH.'tmp/', "{$now}_{$hash}", $content);

		return true;
	}

}