diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
index 49821a043de5..35784d3ee2b4 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
@@ -2642,6 +2642,7 @@ private function registerMailerConfiguration(array $config, ContainerBuilder $co
             MailerBridge\Mailomat\Transport\MailomatTransportFactory::class => 'mailer.transport_factory.mailomat',
             MailerBridge\MailPace\Transport\MailPaceTransportFactory::class => 'mailer.transport_factory.mailpace',
             MailerBridge\Mailchimp\Transport\MandrillTransportFactory::class => 'mailer.transport_factory.mailchimp',
+            MailerBridge\Postal\Transport\PostalTransportFactory::class => 'mailer.transport_factory.postal',
             MailerBridge\Postmark\Transport\PostmarkTransportFactory::class => 'mailer.transport_factory.postmark',
             MailerBridge\Resend\Transport\ResendTransportFactory::class => 'mailer.transport_factory.resend',
             MailerBridge\Scaleway\Transport\ScalewayTransportFactory::class => 'mailer.transport_factory.scaleway',
diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/config/mailer_transports.php b/src/Symfony/Bundle/FrameworkBundle/Resources/config/mailer_transports.php
index bdcd7e9c691c..34e688532c77 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/config/mailer_transports.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Resources/config/mailer_transports.php
@@ -22,6 +22,7 @@
 use Symfony\Component\Mailer\Bridge\Mailjet\Transport\MailjetTransportFactory;
 use Symfony\Component\Mailer\Bridge\Mailomat\Transport\MailomatTransportFactory;
 use Symfony\Component\Mailer\Bridge\MailPace\Transport\MailPaceTransportFactory;
+use Symfony\Component\Mailer\Bridge\Postal\Transport\PostalTransportFactory;
 use Symfony\Component\Mailer\Bridge\Postmark\Transport\PostmarkTransportFactory;
 use Symfony\Component\Mailer\Bridge\Resend\Transport\ResendTransportFactory;
 use Symfony\Component\Mailer\Bridge\Scaleway\Transport\ScalewayTransportFactory;
@@ -57,6 +58,7 @@
         'mailpace' => MailPaceTransportFactory::class,
         'native' => NativeTransportFactory::class,
         'null' => NullTransportFactory::class,
+        'postal' => PostalTransportFactory::class,
         'postmark' => PostmarkTransportFactory::class,
         'resend' => ResendTransportFactory::class,
         'scaleway' => ScalewayTransportFactory::class,
diff --git a/src/Symfony/Component/Mailer/Bridge/Postal/.gitattributes b/src/Symfony/Component/Mailer/Bridge/Postal/.gitattributes
new file mode 100644
index 000000000000..14c3c3594042
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Postal/.gitattributes
@@ -0,0 +1,3 @@
+/Tests export-ignore
+/phpunit.xml.dist export-ignore
+/.git* export-ignore
diff --git a/src/Symfony/Component/Mailer/Bridge/Postal/.gitignore b/src/Symfony/Component/Mailer/Bridge/Postal/.gitignore
new file mode 100644
index 000000000000..c49a5d8df5c6
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Postal/.gitignore
@@ -0,0 +1,3 @@
+vendor/
+composer.lock
+phpunit.xml
diff --git a/src/Symfony/Component/Mailer/Bridge/Postal/CHANGELOG.md b/src/Symfony/Component/Mailer/Bridge/Postal/CHANGELOG.md
new file mode 100644
index 000000000000..00149ea5ac6f
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Postal/CHANGELOG.md
@@ -0,0 +1,7 @@
+CHANGELOG
+=========
+
+7.2
+---
+
+ * Add the bridge
diff --git a/src/Symfony/Component/Mailer/Bridge/Postal/LICENSE b/src/Symfony/Component/Mailer/Bridge/Postal/LICENSE
new file mode 100644
index 000000000000..e374a5c8339d
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Postal/LICENSE
@@ -0,0 +1,19 @@
+Copyright (c) 2024-present Fabien Potencier
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is furnished
+to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/src/Symfony/Component/Mailer/Bridge/Postal/README.md b/src/Symfony/Component/Mailer/Bridge/Postal/README.md
new file mode 100644
index 000000000000..f16ac7d6b0a1
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Postal/README.md
@@ -0,0 +1,24 @@
+Postal Mailer
+=============
+
+Provides [Postal Email](https://docs.postalserver.io/) integration for Symfony Mailer.
+
+Configuration example:
+
+```env
+# API
+MAILER_DSN=postal+api://API_TOKEN@BASE_URL
+```
+
+where:
+ - `API_TOKEN` is your Postal Email API Key
+ - `BASE_URL` is your Postal installation base URL
+
+Resources
+---------
+
+ * [Postal API Docs](https://docs.postalserver.io/developer/api)
+ * [Contributing](https://symfony.com/doc/current/contributing/index.html)
+ * [Report issues](https://github.com/symfony/symfony/issues) and
+   [send Pull Requests](https://github.com/symfony/symfony/pulls)
+   in the [main Symfony repository](https://github.com/symfony/symfony)
\ No newline at end of file
diff --git a/src/Symfony/Component/Mailer/Bridge/Postal/Tests/Transport/PostalApiTransportTest.php b/src/Symfony/Component/Mailer/Bridge/Postal/Tests/Transport/PostalApiTransportTest.php
new file mode 100644
index 000000000000..6332218249a6
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Postal/Tests/Transport/PostalApiTransportTest.php
@@ -0,0 +1,107 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Mailer\Bridge\Postal\Tests\Transport;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\HttpClient\MockHttpClient;
+use Symfony\Component\HttpClient\Response\JsonMockResponse;
+use Symfony\Component\Mailer\Bridge\Postal\Transport\PostalApiTransport;
+use Symfony\Component\Mailer\Exception\HttpTransportException;
+use Symfony\Component\Mime\Address;
+use Symfony\Component\Mime\Email;
+use Symfony\Component\Mime\Part\DataPart;
+use Symfony\Contracts\HttpClient\ResponseInterface;
+
+class PostalApiTransportTest extends TestCase
+{
+    /**
+     * @dataProvider getTransportData
+     */
+    public function testToString(PostalApiTransport $transport, string $expected)
+    {
+        $this->assertSame($expected, (string) $transport);
+    }
+
+    public static function getTransportData(): array
+    {
+        return [
+            [
+                (new PostalApiTransport('TOKEN', 'postal.localhost')),
+                'postal+api://postal.localhost',
+            ],
+            [
+                (new PostalApiTransport('TOKEN', 'postal.localhost'))->setPort(99),
+                'postal+api://postal.localhost:99',
+            ],
+        ];
+    }
+
+    public function testSend()
+    {
+        $client = new MockHttpClient(function (string $method, string $url, array $options): ResponseInterface {
+            $this->assertSame('POST', $method);
+            $this->assertSame('https://postal.localhost:8984/api/v1/send/message', $url);
+            $this->assertStringContainsString('X-Server-API-Key: TOKEN', $options['headers'][0] ?? $options['request_headers'][0]);
+
+            $body = json_decode($options['body'], true);
+            $this->assertSame('fabpot@symfony.com', $body['from']);
+            $this->assertSame('saif.gmati@symfony.com', $body['to'][0]);
+            $this->assertSame('Hello!', $body['subject']);
+            $this->assertSame('Hello There!', $body['plain_body']);
+            $this->assertSame('<h1>Hello There!</h1>', $body['html_body']);
+            $this->assertCount(1, $body['attachments']);
+            $this->assertSame('attachment.txt', $body['attachments'][0]['name']);
+            $this->assertSame('text/plain', $body['attachments'][0]['content_type']);
+            $this->assertSame(base64_encode('some attachment'), $body['attachments'][0]['data']);
+            $this->assertSame('foo@bar.fr', $body['reply_to']);
+
+            return new JsonMockResponse(['message_id' => 'foobar'], [
+                'http_code' => 200,
+            ]);
+        });
+        $transport = new PostalApiTransport('TOKEN', 'postal.localhost', $client);
+        $transport->setPort(8984);
+
+        $mail = new Email();
+        $mail->subject('Hello!')
+            ->to(new Address('saif.gmati@symfony.com', 'Saif Eddin'))
+            ->from(new Address('fabpot@symfony.com', 'Fabien'))
+            ->replyTo(new Address('foo@bar.fr', 'Foo'))
+            ->text('Hello There!')
+            ->html('<h1>Hello There!</h1>')
+            ->addPart(new DataPart('some attachment', 'attachment.txt', 'text/plain'));
+
+        $message = $transport->send($mail);
+
+        $this->assertSame('foobar', $message->getMessageId());
+    }
+
+    public function testSendThrowsForErrorResponse()
+    {
+        $client = new MockHttpClient(function (string $method, string $url, array $options): ResponseInterface {
+            return new JsonMockResponse(['message' => 'i\'m a teapot'], [
+                'http_code' => 418,
+            ]);
+        });
+        $transport = new PostalApiTransport('TOKEN', 'postal.localhost', $client);
+
+        $mail = new Email();
+        $mail->subject('Hello!')
+            ->to(new Address('saif.gmati@symfony.com', 'Saif Eddin'))
+            ->from(new Address('fabpot@symfony.com', 'Fabien'))
+            ->text('Hello There!');
+
+        $this->expectException(HttpTransportException::class);
+        $this->expectExceptionMessage('Unable to send an email: i\'m a teapot (code 418).');
+        $transport->send($mail);
+    }
+}
diff --git a/src/Symfony/Component/Mailer/Bridge/Postal/Tests/Transport/PostalTransportFactoryTest.php b/src/Symfony/Component/Mailer/Bridge/Postal/Tests/Transport/PostalTransportFactoryTest.php
new file mode 100644
index 000000000000..87f181a5e2ef
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Postal/Tests/Transport/PostalTransportFactoryTest.php
@@ -0,0 +1,69 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Mailer\Bridge\Postal\Tests\Transport;
+
+use Psr\Log\NullLogger;
+use Symfony\Component\HttpClient\MockHttpClient;
+use Symfony\Component\Mailer\Bridge\Postal\Transport\PostalApiTransport;
+use Symfony\Component\Mailer\Bridge\Postal\Transport\PostalTransportFactory;
+use Symfony\Component\Mailer\Test\TransportFactoryTestCase;
+use Symfony\Component\Mailer\Transport\Dsn;
+use Symfony\Component\Mailer\Transport\TransportFactoryInterface;
+
+class PostalTransportFactoryTest extends TransportFactoryTestCase
+{
+    public function getFactory(): TransportFactoryInterface
+    {
+        return new PostalTransportFactory(null, new MockHttpClient(), new NullLogger());
+    }
+
+    public static function supportsProvider(): iterable
+    {
+        yield [
+            new Dsn('postal+api', 'postal.localhost'),
+            true,
+        ];
+
+        yield [
+            new Dsn('postal', 'postal.localhost'),
+            true,
+        ];
+    }
+
+    public static function createProvider(): iterable
+    {
+        $logger = new NullLogger();
+
+        yield [
+            new Dsn('postal+api', 'postal.localhost', null, self::PASSWORD),
+            (new PostalApiTransport(self::PASSWORD, 'postal.localhost', new MockHttpClient(), null, $logger)),
+        ];
+
+        yield [
+            new Dsn('postal', 'postal.localhost', null, self::PASSWORD),
+            (new PostalApiTransport(self::PASSWORD, 'postal.localhost', new MockHttpClient(), null, $logger)),
+        ];
+    }
+
+    public static function unsupportedSchemeProvider(): iterable
+    {
+        yield [
+            new Dsn('postal+foo', 'postal.localhost', null, self::PASSWORD),
+            'The "postal+foo" scheme is not supported; supported schemes for mailer "postal" are: "postal", "postal+api".',
+        ];
+    }
+
+    public static function incompleteDsnProvider(): iterable
+    {
+        yield [new Dsn('postal+api', 'postal.localhost', null)];
+    }
+}
diff --git a/src/Symfony/Component/Mailer/Bridge/Postal/Transport/PostalApiTransport.php b/src/Symfony/Component/Mailer/Bridge/Postal/Transport/PostalApiTransport.php
new file mode 100644
index 000000000000..39e087051114
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Postal/Transport/PostalApiTransport.php
@@ -0,0 +1,142 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Mailer\Bridge\Postal\Transport;
+
+use Psr\EventDispatcher\EventDispatcherInterface;
+use Psr\Log\LoggerInterface;
+use Symfony\Component\Mailer\Envelope;
+use Symfony\Component\Mailer\Exception\HttpTransportException;
+use Symfony\Component\Mailer\SentMessage;
+use Symfony\Component\Mailer\Transport\AbstractApiTransport;
+use Symfony\Component\Mime\Address;
+use Symfony\Component\Mime\Email;
+use Symfony\Contracts\HttpClient\Exception\DecodingExceptionInterface;
+use Symfony\Contracts\HttpClient\Exception\TransportExceptionInterface;
+use Symfony\Contracts\HttpClient\HttpClientInterface;
+use Symfony\Contracts\HttpClient\ResponseInterface;
+
+final class PostalApiTransport extends AbstractApiTransport
+{
+    public function __construct(
+        #[\SensitiveParameter] private string $apiToken,
+        private string $hostName,
+        ?HttpClientInterface $client = null,
+        ?EventDispatcherInterface $dispatcher = null,
+        ?LoggerInterface $logger = null,
+    ) {
+        parent::__construct($client, $dispatcher, $logger);
+        $this->setHost($hostName);
+    }
+
+    public function __toString(): string
+    {
+        return \sprintf('postal+api://%s', $this->getEndpoint());
+    }
+
+    protected function doSendApi(SentMessage $sentMessage, Email $email, Envelope $envelope): ResponseInterface
+    {
+        $path = \sprintf('/api/v1/send/message');
+
+        $response = $this->client->request('POST', 'https://'.$this->getEndpoint().$path, [
+            'json' => $this->getPayload($email, $envelope),
+            'headers' => [
+                'X-Server-API-Key' => $this->apiToken,
+            ],
+        ]);
+
+        try {
+            $statusCode = $response->getStatusCode();
+            $result = $response->toArray(false);
+        } catch (DecodingExceptionInterface $e) {
+            throw new HttpTransportException('Unable to send an email: '.$response->getContent(false).\sprintf(' (code %d).', $statusCode), $response);
+        } catch (TransportExceptionInterface $e) {
+            throw new HttpTransportException('Could not reach the remote Postal server.', $response, 0, $e);
+        }
+
+        if (200 !== $statusCode) {
+            throw new HttpTransportException('Unable to send an email: '.$result['message'].\sprintf(' (code %d).', $statusCode), $response);
+        }
+
+        $sentMessage->setMessageId($result['message_id']);
+
+        return $response;
+    }
+
+    private function getPayload(Email $email, Envelope $envelope): array
+    {
+        $payload = [
+            'from' => $envelope->getSender()->getAddress(),
+            'to' => array_map(fn (Address $address) => $address->getAddress(), $this->getRecipients($email, $envelope)),
+            'subject' => $email->getSubject(),
+        ];
+        if ($emails = $email->getCc()) {
+            $payload['cc'] = array_map(fn (Address $address) => $address->getAddress(), $emails);
+        }
+        if ($emails = $email->getBcc()) {
+            $payload['bcc'] = array_map(fn (Address $address) => $address->getAddress(), $emails);
+        }
+        if ($email->getTextBody()) {
+            $payload['plain_body'] = $email->getTextBody();
+        }
+        if ($email->getHtmlBody()) {
+            $payload['html_body'] = $email->getHtmlBody();
+        }
+        if ($attachments = $this->prepareAttachments($email)) {
+            $payload['attachments'] = $attachments;
+        }
+        if ($headers = $this->getCustomHeaders($email)) {
+            $payload['headers'] = $headers;
+        }
+        if ($emails = $email->getReplyTo()) {
+            $payload['reply_to'] = $emails[0]->getAddress();
+        }
+
+        return $payload;
+    }
+
+    private function prepareAttachments(Email $email): array
+    {
+        $attachments = [];
+        foreach ($email->getAttachments() as $attachment) {
+            $attachments[] = [
+                'name' => $attachment->getFilename(),
+                'content_type' => $attachment->getContentType(),
+                'data' => base64_encode($attachment->getBody()),
+            ];
+        }
+
+        return $attachments;
+    }
+
+    private function getCustomHeaders(Email $email): array
+    {
+        $headers = [];
+        $headersToBypass = ['from', 'to', 'cc', 'bcc', 'subject', 'content-type', 'sender', 'reply-to'];
+        foreach ($email->getHeaders()->all() as $name => $header) {
+            if (\in_array($name, $headersToBypass, true)) {
+                continue;
+            }
+
+            $headers[] = [
+                'key' => $header->getName(),
+                'value' => $header->getBodyAsString(),
+            ];
+        }
+
+        return $headers;
+    }
+
+    private function getEndpoint(): string
+    {
+        return $this->host.($this->port ? ':'.$this->port : '');
+    }
+}
diff --git a/src/Symfony/Component/Mailer/Bridge/Postal/Transport/PostalTransportFactory.php b/src/Symfony/Component/Mailer/Bridge/Postal/Transport/PostalTransportFactory.php
new file mode 100644
index 000000000000..6467db1cf83c
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Postal/Transport/PostalTransportFactory.php
@@ -0,0 +1,40 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Mailer\Bridge\Postal\Transport;
+
+use Symfony\Component\Mailer\Exception\UnsupportedSchemeException;
+use Symfony\Component\Mailer\Transport\AbstractTransportFactory;
+use Symfony\Component\Mailer\Transport\Dsn;
+use Symfony\Component\Mailer\Transport\TransportInterface;
+
+final class PostalTransportFactory extends AbstractTransportFactory
+{
+    public function create(Dsn $dsn): TransportInterface
+    {
+        $scheme = $dsn->getScheme();
+
+        if (!\in_array($scheme, $this->getSupportedSchemes(), true)) {
+            throw new UnsupportedSchemeException($dsn, 'postal', $this->getSupportedSchemes());
+        }
+
+        $host = $dsn->getHost();
+        $port = $dsn->getPort();
+        $apiToken = $this->getPassword($dsn);
+
+        return (new PostalApiTransport($apiToken, $host, $this->client, $this->dispatcher, $this->logger))->setPort($port);
+    }
+
+    protected function getSupportedSchemes(): array
+    {
+        return ['postal', 'postal+api'];
+    }
+}
diff --git a/src/Symfony/Component/Mailer/Bridge/Postal/composer.json b/src/Symfony/Component/Mailer/Bridge/Postal/composer.json
new file mode 100644
index 000000000000..8c3d3dfe8eda
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Postal/composer.json
@@ -0,0 +1,32 @@
+{
+    "name": "symfony/postal-mailer",
+    "type": "symfony-mailer-bridge",
+    "description": "Symfony Postal Mailer Bridge",
+    "keywords": [],
+    "homepage": "https://symfony.com",
+    "license": "MIT",
+    "authors": [
+        {
+            "name": "Jonas Claes",
+            "homepage": "https://github.com/jonasclaes"
+        },
+        {
+            "name": "Symfony Community",
+            "homepage": "https://symfony.com/contributors"
+        }
+    ],
+    "require": {
+        "php": ">=8.2",
+        "symfony/mailer": "^7.2"
+    },
+    "require-dev": {
+        "symfony/http-client": "^6.4|^7.0"
+    },
+    "autoload": {
+        "psr-4": { "Symfony\\Component\\Mailer\\Bridge\\Postal\\": "" },
+        "exclude-from-classmap": [
+            "/Tests/"
+        ]
+    },
+    "minimum-stability": "dev"
+}
diff --git a/src/Symfony/Component/Mailer/Bridge/Postal/phpunit.xml.dist b/src/Symfony/Component/Mailer/Bridge/Postal/phpunit.xml.dist
new file mode 100644
index 000000000000..8e264cdc7d0f
--- /dev/null
+++ b/src/Symfony/Component/Mailer/Bridge/Postal/phpunit.xml.dist
@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="http://schema.phpunit.de/9.3/phpunit.xsd"
+         backupGlobals="false"
+         colors="true"
+         bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
+>
+    <php>
+        <ini name="error_reporting" value="-1" />
+    </php>
+
+    <testsuites>
+        <testsuite name="Symfony Postal Mailer Test Suite">
+            <directory>./Tests/</directory>
+        </testsuite>
+    </testsuites>
+
+    <coverage>
+        <include>
+            <directory>./</directory>
+        </include>
+        <exclude>
+            <directory>./Resources</directory>
+            <directory>./Tests</directory>
+            <directory>./vendor</directory>
+        </exclude>
+    </coverage>
+</phpunit>
diff --git a/src/Symfony/Component/Mailer/Exception/UnsupportedSchemeException.php b/src/Symfony/Component/Mailer/Exception/UnsupportedSchemeException.php
index 07c0ce6cccbe..999477c0360a 100644
--- a/src/Symfony/Component/Mailer/Exception/UnsupportedSchemeException.php
+++ b/src/Symfony/Component/Mailer/Exception/UnsupportedSchemeException.php
@@ -60,6 +60,10 @@ class UnsupportedSchemeException extends LogicException
             'class' => Bridge\Mailchimp\Transport\MandrillTransportFactory::class,
             'package' => 'symfony/mailchimp-mailer',
         ],
+        'postal' => [
+            'class' => Bridge\Postal\Transport\PostalTransportFactory::class,
+            'package' => 'symfony/postal-mailer',
+        ],
         'postmark' => [
             'class' => Bridge\Postmark\Transport\PostmarkTransportFactory::class,
             'package' => 'symfony/postmark-mailer',
diff --git a/src/Symfony/Component/Mailer/Tests/Exception/UnsupportedSchemeExceptionTest.php b/src/Symfony/Component/Mailer/Tests/Exception/UnsupportedSchemeExceptionTest.php
index e28422735eac..1a783d9c9d05 100644
--- a/src/Symfony/Component/Mailer/Tests/Exception/UnsupportedSchemeExceptionTest.php
+++ b/src/Symfony/Component/Mailer/Tests/Exception/UnsupportedSchemeExceptionTest.php
@@ -24,6 +24,7 @@
 use Symfony\Component\Mailer\Bridge\Mailjet\Transport\MailjetTransportFactory;
 use Symfony\Component\Mailer\Bridge\Mailomat\Transport\MailomatTransportFactory;
 use Symfony\Component\Mailer\Bridge\MailPace\Transport\MailPaceTransportFactory;
+use Symfony\Component\Mailer\Bridge\Postal\Transport\PostalTransportFactory;
 use Symfony\Component\Mailer\Bridge\Postmark\Transport\PostmarkTransportFactory;
 use Symfony\Component\Mailer\Bridge\Resend\Transport\ResendTransportFactory;
 use Symfony\Component\Mailer\Bridge\Scaleway\Transport\ScalewayTransportFactory;
@@ -50,6 +51,7 @@ public static function setUpBeforeClass(): void
             MailjetTransportFactory::class => false,
             MailomatTransportFactory::class => false,
             MandrillTransportFactory::class => false,
+            PostalTransportFactory::class => false,
             PostmarkTransportFactory::class => false,
             ResendTransportFactory::class => false,
             ScalewayTransportFactory::class => false,
@@ -83,6 +85,7 @@ public static function messageWhereSchemeIsPartOfSchemeToPackageMapProvider(): \
         yield ['mailomat', 'symfony/mailomat-mailer'];
         yield ['mailpace', 'symfony/mail-pace-mailer'];
         yield ['mandrill', 'symfony/mailchimp-mailer'];
+        yield ['postal', 'symfony/postal-mailer'];
         yield ['postmark', 'symfony/postmark-mailer'];
         yield ['resend', 'symfony/resend-mailer'];
         yield ['scaleway', 'symfony/scaleway-mailer'];
diff --git a/src/Symfony/Component/Mailer/Transport.php b/src/Symfony/Component/Mailer/Transport.php
index b2820b029d66..93fc0ba2e6ca 100644
--- a/src/Symfony/Component/Mailer/Transport.php
+++ b/src/Symfony/Component/Mailer/Transport.php
@@ -24,6 +24,7 @@
 use Symfony\Component\Mailer\Bridge\Mailjet\Transport\MailjetTransportFactory;
 use Symfony\Component\Mailer\Bridge\Mailomat\Transport\MailomatTransportFactory;
 use Symfony\Component\Mailer\Bridge\MailPace\Transport\MailPaceTransportFactory;
+use Symfony\Component\Mailer\Bridge\Postal\Transport\PostalTransportFactory;
 use Symfony\Component\Mailer\Bridge\Postmark\Transport\PostmarkTransportFactory;
 use Symfony\Component\Mailer\Bridge\Resend\Transport\ResendTransportFactory;
 use Symfony\Component\Mailer\Bridge\Scaleway\Transport\ScalewayTransportFactory;
@@ -59,6 +60,7 @@ final class Transport
         MailomatTransportFactory::class,
         MailPaceTransportFactory::class,
         MandrillTransportFactory::class,
+        PostalTransportFactory::class,
         PostmarkTransportFactory::class,
         ResendTransportFactory::class,
         ScalewayTransportFactory::class,