symfony · fabpot · Jul 15, 2020 · Jul 8, 2020
diff --git a/src/Symfony/Component/Mailer/Bridge/Sendgrid/Tests/Transport/SendgridApiTransportTest.php b/src/Symfony/Component/Mailer/Bridge/Sendgrid/Tests/Transport/SendgridApiTransportTest.php
@@ -166,4 +166,30 @@ public function testCustomHeader()
         $this->assertArrayHasKey('foo', $payload['headers']);
         $this->assertEquals('bar', $payload['headers']['foo']);
     }
+
+    public function testReplyTo()
+    {
+        $from = 'from@example.com';
+        $to = 'to@example.com';
+        $replyTo = 'replyto@example.com';
+        $email = new Email();
+        $email->from($from)
+            ->to($to)
+            ->replyTo($replyTo)
+            ->text('content');
+        $envelope = new Envelope(new Address($from), [new Address($to)]);
+
+        $transport = new SendgridApiTransport('ACCESS_KEY');
+        $method = new \ReflectionMethod(SendgridApiTransport::class, 'getPayload');
+        $method->setAccessible(true);
+        $payload = $method->invoke($transport, $email, $envelope);
+
+        $this->assertArrayHasKey('from', $payload);
+        $this->assertArrayHasKey('email', $payload['from']);
+        $this->assertSame($from, $payload['from']['email']);
+
+        $this->assertArrayHasKey('reply_to', $payload);
+        $this->assertArrayHasKey('email', $payload['reply_to']);
+        $this->assertSame($replyTo, $payload['reply_to']['email']);
+    }
 }
diff --git a/src/Symfony/Component/Mailer/Bridge/Sendgrid/Transport/SendgridApiTransport.php b/src/Symfony/Component/Mailer/Bridge/Sendgrid/Transport/SendgridApiTransport.php
@@ -93,11 +93,16 @@ private function getPayload(Email $email, Envelope $envelope): array
         if ($emails = array_map($addressStringifier, $email->getBcc())) {
             $personalization['bcc'] = $emails;
         }
+        if ($emails = array_map($addressStringifier, $email->getReplyTo())) {
+            // Email class supports an array of reply-to addresses,
+            // but SendGrid only supports a single address
+            $payload['reply_to'] = $emails[0];
+        }
 
         $payload['personalizations'][] = $personalization;
 
         // these headers can't be overwritten according to Sendgrid docs
-        // see https://developers.pepipost.com/migration-api/new-subpage/email-send
+        // see https://sendgrid.api-docs.io/v3.0/mail-send/mail-send-errors#-Headers-Errors
         $headersToBypass = ['x-sg-id', 'x-sg-eid', 'received', 'dkim-signature', 'content-transfer-encoding', 'from', 'to', 'cc', 'bcc', 'subject', 'content-type', 'reply-to'];
         foreach ($email->getHeaders()->all() as $name => $header) {
             if (\in_array($name, $headersToBypass, true)) {