Blastengine\Client::initialize($your_user_id, $your_api_key);

$transaction = new Blastengine\Transaction();
$transaction
	->to($this->config["to"])
	->from($this->config["from"]["email"])
	->subject('Test subject')
	->text_part('This is test email');
try {
	$transaction->send();
} catch ( Exception $ex ) {
	// Error
}

$transaction = new Blastengine\Transaction();
$transaction
	->to($this->config["to"])
	->from($this->config["from"]["email"])
	->subject('Test subject')
	->text_part('This is test email')
	->attachment('/path/to/image')
	->attachment('/path/to/another');
try {
	$transaction->send();
} catch ( Exception $ex ) {
	// Error
}

$transaction = new Blastengine\Transaction();
$transaction->delivery_id(100);
$transaction->get();
echo $transaction->delivery_type // => TRANSACTION