Test recipient for a valid email. Use avisot.

gistfile1.php

<?php 

$objResult = Database::getInstance()
				->prepare('SELECT id, email FROM orm_avisota_recipient')
				->execute();

$objTester = new Swift_Mime_Grammar();

while($objResult->next())
{
	if (!preg_match('/^' . $objTester->getDefinition('addr-spec') . '$/D', $objResult->email))
    {
		echo "<pre>";
		var_dump($objResult->id);
        var_dump($objResult->email);
		echo "</pre>";
    }
}