generateEmail.php

<?php

function generateEmail() {
    $nameLength = rand(5, 9);
    $name = '';
    for($x = 0; $x < $nameLength; $x++) {
	    $name .= chr(rand(97, 122));
    }

    $domainLength = rand(3, 9);
    $domain = '';
    for($x = 0; $x < $domainLength; $x++) {
	    $domain .= chr(rand(97, 122));
    }

    $tdls = array('de', 'com', 'co.uk', 'net');
    $tdl = $tdls[rand(0, count($tdls) - 1)];

    return $name.'@'.$domain.'.'.$tdl;
}

for($x = 0; $x < 100; $x++) {
    print generateEmail()."\n";
}