diff --git a/tests/phpunit/wp-mail-real-test.php b/tests/phpunit/wp-mail-real-test.php
deleted file mode 100644
index 6c089e4ffb285..0000000000000
--- a/tests/phpunit/wp-mail-real-test.php
+++ /dev/null
@@ -1,84 +0,0 @@
-<?php
-/**
- * wp-mail-real-test.php
- *
- * Test script for wp_mail with real addresses.
- */
-
-// Parse options.
-$options = 'v:r:d';
-if ( is_callable( 'getopt' ) ) {
-	$opts = getopt( $options );
-} else {
-	require __DIR__ . '/wp-testlib/getopt.php';
-	$opts = getoptParser::getopt( $options );
-}
-
-define( 'DIR_TESTROOT', realpath( __DIR__ ) );
-
-define( 'TEST_WP', true );
-define( 'WP_DEBUG', array_key_exists( 'd', $opts ) );
-
-if ( ! empty( $opts['r'] ) ) {
-	define( 'DIR_WP', realpath( $opts['r'] ) );
-} elseif ( ! empty( $opts['v'] ) ) {
-		define( 'DIR_WP', DIR_TESTROOT . '/wordpress-' . $opts['v'] );
-} else {
-	define( 'DIR_WP', DIR_TESTROOT . '/wordpress' );
-}
-
-// Make sure all useful errors are displayed during setup.
-error_reporting( E_ALL & ~E_DEPRECATED );
-ini_set( 'display_errors', true );
-
-require_once DIR_TESTROOT . '/wp-testlib/utils.php';
-
-// Configure WP.
-require_once DIR_TESTROOT . '/wp-config.php';
-define( 'ABSPATH', realpath( DIR_WP ) . '/' );
-
-// Install WP.
-define( 'WP_BLOG_TITLE', rand_str() );
-define( 'WP_USER_NAME', rand_str() );
-define( 'WP_USER_EMAIL', rand_str() . '@example.com' );
-
-// Initialize WP.
-define( 'WP_INSTALLING', 1 );
-$_SERVER['PATH_INFO'] = $_SERVER['SCRIPT_NAME']; // Prevent a warning from some sloppy code in wp-settings.php.
-require_once ABSPATH . 'wp-settings.php';
-
-drop_tables();
-
-require_once ABSPATH . 'wp-admin/includes/upgrade.php';
-wp_install( WP_BLOG_TITLE, WP_USER_NAME, WP_USER_EMAIL, true );
-
-// Make sure we're installed.
-assert( true === is_blog_installed() );
-
-// phpcs:ignore Generic.NamingConventions.UpperCaseConstantName.ConstantNotUpperCase
-define( 'PHPUnit_MAIN_METHOD', false );
-$original_wpdb = $GLOBALS['wpdb'];
-
-// Hide warnings during testing, since that's the normal WP behavior.
-if ( ! WP_DEBUG ) {
-	error_reporting( E_ALL ^ E_NOTICE );
-}
-
-$to        = 'To <wp.mail.testing@gmail.com>';
-$from      = 'From <wp.mail.testing+from@gmail.com>';
-$cc        = 'CC <wp.mail.testing+cc@gmail.com>';
-$bcc       = 'BCC <wp.mail.testing+bcc@gmail.com>';
-$subject   = 'RFC2822 Testing';
-$message   = 'My RFC822 Test Message';
-$headers[] = "From: {$from}";
-$headers[] = "CC: {$cc}";
-
-wp_mail( $to, $subject, $message, $headers );
-
-$headers   = array();
-$subject   = 'RFC2822 Testing 2';
-$message   = 'My RFC822 Test Message 2';
-$to        = 'To <wp.mail.testing+to@gmail.com>';
-$headers[] = "BCC: {$bcc}";
-wp_mail( '', $subject, $message, $headers );
-echo "Test emails sent!\n";