symfony
diff --git a/‎src/Symfony/Component/Mailer/Tests/Transport/Fixtures/fake-sendmail.php
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+5Lines changed: 5 additions & 0 deletions b/‎src/Symfony/Component/Mailer/Tests/Transport/Fixtures/fake-sendmail.php
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+5Lines changed: 5 additions & 0 deletions
diff --git a/‎src/Symfony/Component/Mailer/Tests/Transport/SendmailTransportTest.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/Mailer/Tests/Transport/SendmailTransportTest.php
+68Lines changed: 68 additions & 0 deletions b/‎src/Symfony/Component/Mailer/Tests/Transport/SendmailTransportTest.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/Mailer/Tests/Transport/SendmailTransportTest.php
+68Lines changed: 68 additions & 0 deletions
diff --git a/‎src/Symfony/Component/Mailer/Transport/SendmailTransport.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/Mailer/Transport/SendmailTransport.php
+9Lines changed: 9 additions & 0 deletions b/‎src/Symfony/Component/Mailer/Transport/SendmailTransport.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/Mailer/Transport/SendmailTransport.php
+9Lines changed: 9 additions & 0 deletions
@@ -0,0 +1,5 @@
+#!/usr/bin/env php
+<?php
+$argsPath = sys_get_temp_dir().\DIRECTORY_SEPARATOR.'sendmail_args';
+
+file_put_contents($argsPath, implode(' ', $argv));
@@ -12,13 +12,81 @@
 namespace Symfony\Component\Mailer\Tests\Transport;
 
 use PHPUnit\Framework\TestCase;
+use Symfony\Component\Mailer\DelayedEnvelope;
 use Symfony\Component\Mailer\Transport\SendmailTransport;
+use Symfony\Component\Mime\Address;
+use Symfony\Component\Mime\Email;
 
 class SendmailTransportTest extends TestCase
 {
+    private const FAKE_SENDMAIL = __DIR__.'/Fixtures/fake-sendmail.php -t';
+
+    /**
+     * @var string
+     */
+    private $argsPath;
+
+    protected function setUp(): void
+    {
+        $this->argsPath = sys_get_temp_dir().\DIRECTORY_SEPARATOR.'sendmail_args';
+    }
+
+    protected function tearDown(): void
+    {
+        if (file_exists($this->argsPath)) {
+            @unlink($this->argsPath);
+        }
+        unset($this->argsPath);
+    }
+
     public function testToString()
     {
         $t = new SendmailTransport();
         $this->assertEquals('smtp://sendmail', (string) $t);
     }
+
+    public function testToIsUsedWhenRecipientsAreNotSet()
+    {
+        if ('\\' === \DIRECTORY_SEPARATOR) {
+            $this->markTestSkipped('Windows does not support shebangs nor non-blocking standard streams');
+        }
+
+        $mail = new Email();
+        $mail
+            ->from('from@mail.com')
+            ->to('to@mail.com')
+            ->subject('Subject')
+            ->text('Some text')
+        ;
+
+        $envelope = new DelayedEnvelope($mail);
+
+        $sendmailTransport = new SendmailTransport(self::FAKE_SENDMAIL);
+        $sendmailTransport->send($mail, $envelope);
+
+        $this->assertStringEqualsFile($this->argsPath, __DIR__.'/Fixtures/fake-sendmail.php -ffrom@mail.com to@mail.com');
+    }
+
+    public function testRecipientsAreUsedWhenSet()
+    {
+        if ('\\' === \DIRECTORY_SEPARATOR) {
+            $this->markTestSkipped('Windows does not support shebangs nor non-blocking standard streams');
+        }
+
+        $mail = new Email();
+        $mail
+            ->from('from@mail.com')
+            ->to('to@mail.com')
+            ->subject('Subject')
+            ->text('Some text')
+        ;
+
+        $envelope = new DelayedEnvelope($mail);
+        $envelope->setRecipients([new Address('recipient@mail.com')]);
+
+        $sendmailTransport = new SendmailTransport(self::FAKE_SENDMAIL);
+        $sendmailTransport->send($mail, $envelope);
+
+        $this->assertStringEqualsFile($this->argsPath, __DIR__.'/Fixtures/fake-sendmail.php -ffrom@mail.com recipient@mail.com');
+    }
 }
@@ -86,6 +86,11 @@ protected function doSend(SentMessage $message): void
         $this->getLogger()->debug(sprintf('Email transport "%s" starting', __CLASS__));
 
         $command = $this->command;
+
+        if (!empty($recipients = $message->getEnvelope()->getRecipients())) {
+            $command = str_replace(' -t', '', $command);
+        }
+
         if (!str_contains($command, ' -f')) {
             $command .= ' -f'.escapeshellarg($message->getEnvelope()->getSender()->getEncodedAddress());
         }
@@ -96,6 +101,10 @@ protected function doSend(SentMessage $message): void
             $chunks = AbstractStream::replace("\n.", "\n..", $chunks);
         }
 
+        foreach ($recipients as $recipient) {
+            $command .= ' '.escapeshellarg($recipient->getEncodedAddress());
+        }
+
         $this->stream->setCommand($command);
         $this->stream->initialize();
         foreach ($chunks as $chunk) {