composerPsr4Injection.php

<?php
$composer = require ("vendor/autoload.php");
$composerModuleDir = __DIR__.'/vendor/composer/../../modules';
$myPsr4 = [
    'services\\models\\' => $composerModuleDir.'/services/models',
    'services\\controller\\' => $composerModuleDir.'/services/controller',
];
foreach ($myPsr4 as $namespace => $path) {
    $composer->setPsr4($namespace, $path);
}

use services\models\Emaildata;
$eModel = new Emaildata();

print_r($eModel); //yes
?>