diff --git a/src/Symfony/Component/Mailer/Bridge/Amazon/Tests/Transport/SesApiAsyncAwsTransportTest.php b/src/Symfony/Component/Mailer/Bridge/Amazon/Tests/Transport/SesApiAsyncAwsTransportTest.php
index ef64903ace3fb..a5e48ef966819 100644
--- a/src/Symfony/Component/Mailer/Bridge/Amazon/Tests/Transport/SesApiAsyncAwsTransportTest.php
+++ b/src/Symfony/Component/Mailer/Bridge/Amazon/Tests/Transport/SesApiAsyncAwsTransportTest.php
@@ -52,6 +52,22 @@ public function getTransportData()
                 new SesApiAsyncAwsTransport(new SesClient(Configuration::create(['accessKeyId' => 'ACCESS_KEY', 'accessKeySecret' => 'SECRET_KEY', 'endpoint' => 'https://example.com:99']))),
                 'ses+api://ACCESS_KEY@example.com:99',
             ],
+            [
+                new SesApiAsyncAwsTransport(new SesClient(Configuration::create(['accessKeyId' => 'ACCESS_KEY', 'accessKeySecret' => 'SECRET_KEY', 'sessionToken' => 'SESSION_TOKEN']))),
+                'ses+api://ACCESS_KEY@us-east-1',
+            ],
+            [
+                new SesApiAsyncAwsTransport(new SesClient(Configuration::create(['accessKeyId' => 'ACCESS_KEY', 'accessKeySecret' => 'SECRET_KEY', 'region' => 'us-west-1', 'sessionToken' => 'SESSION_TOKEN']))),
+                'ses+api://ACCESS_KEY@us-west-1',
+            ],
+            [
+                new SesApiAsyncAwsTransport(new SesClient(Configuration::create(['accessKeyId' => 'ACCESS_KEY', 'accessKeySecret' => 'SECRET_KEY', 'endpoint' => 'https://example.com', 'sessionToken' => 'SESSION_TOKEN']))),
+                'ses+api://ACCESS_KEY@example.com',
+            ],
+            [
+                new SesApiAsyncAwsTransport(new SesClient(Configuration::create(['accessKeyId' => 'ACCESS_KEY', 'accessKeySecret' => 'SECRET_KEY', 'endpoint' => 'https://example.com:99', 'sessionToken' => 'SESSION_TOKEN']))),
+                'ses+api://ACCESS_KEY@example.com:99',
+            ],
         ];
     }
 
diff --git a/src/Symfony/Component/Mailer/Bridge/Amazon/Tests/Transport/SesHttpAsyncAwsTransportTest.php b/src/Symfony/Component/Mailer/Bridge/Amazon/Tests/Transport/SesHttpAsyncAwsTransportTest.php
index 981b92d8fb8f4..c64a5218eb673 100644
--- a/src/Symfony/Component/Mailer/Bridge/Amazon/Tests/Transport/SesHttpAsyncAwsTransportTest.php
+++ b/src/Symfony/Component/Mailer/Bridge/Amazon/Tests/Transport/SesHttpAsyncAwsTransportTest.php
@@ -52,6 +52,22 @@ public function getTransportData()
                 new SesHttpAsyncAwsTransport(new SesClient(Configuration::create(['accessKeyId' => 'ACCESS_KEY', 'accessKeySecret' => 'SECRET_KEY', 'endpoint' => 'https://example.com:99']))),
                 'ses+https://ACCESS_KEY@example.com:99',
             ],
+            [
+                new SesHttpAsyncAwsTransport(new SesClient(Configuration::create(['accessKeyId' => 'ACCESS_KEY', 'accessKeySecret' => 'SECRET_KEY', 'sessionToken' => 'SESSION_TOKEN']))),
+                'ses+https://ACCESS_KEY@us-east-1',
+            ],
+            [
+                new SesHttpAsyncAwsTransport(new SesClient(Configuration::create(['accessKeyId' => 'ACCESS_KEY', 'accessKeySecret' => 'SECRET_KEY', 'region' => 'us-west-1', 'sessionToken' => 'SESSION_TOKEN']))),
+                'ses+https://ACCESS_KEY@us-west-1',
+            ],
+            [
+                new SesHttpAsyncAwsTransport(new SesClient(Configuration::create(['accessKeyId' => 'ACCESS_KEY', 'accessKeySecret' => 'SECRET_KEY', 'endpoint' => 'https://example.com', 'sessionToken' => 'SESSION_TOKEN']))),
+                'ses+https://ACCESS_KEY@example.com',
+            ],
+            [
+                new SesHttpAsyncAwsTransport(new SesClient(Configuration::create(['accessKeyId' => 'ACCESS_KEY', 'accessKeySecret' => 'SECRET_KEY', 'endpoint' => 'https://example.com:99', 'sessionToken' => 'SESSION_TOKEN']))),
+                'ses+https://ACCESS_KEY@example.com:99',
+            ],
         ];
     }
 
diff --git a/src/Symfony/Component/Mailer/Bridge/Amazon/Tests/Transport/SesTransportFactoryTest.php b/src/Symfony/Component/Mailer/Bridge/Amazon/Tests/Transport/SesTransportFactoryTest.php
index 3996070ebcc5d..b7fa43fc26870 100644
--- a/src/Symfony/Component/Mailer/Bridge/Amazon/Tests/Transport/SesTransportFactoryTest.php
+++ b/src/Symfony/Component/Mailer/Bridge/Amazon/Tests/Transport/SesTransportFactoryTest.php
@@ -82,6 +82,21 @@ public function createProvider(): iterable
             new SesApiAsyncAwsTransport(new SesClient(Configuration::create(['accessKeyId' => self::USER, 'accessKeySecret' => self::PASSWORD, 'region' => 'eu-west-1', 'endpoint' => 'https://example.com:8080']), null, $client, $logger), $dispatcher, $logger),
         ];
 
+        yield [
+            new Dsn('ses+api', 'default', self::USER, self::PASSWORD, null, ['session_token' => 'se$sion']),
+            new SesApiAsyncAwsTransport(new SesClient(Configuration::create(['accessKeyId' => self::USER, 'accessKeySecret' => self::PASSWORD, 'region' => 'eu-west-1', 'sessionToken' => 'se$sion']), null, $client, $logger), $dispatcher, $logger),
+        ];
+
+        yield [
+            new Dsn('ses+api', 'default', self::USER, self::PASSWORD, null, ['region' => 'eu-west-2', 'session_token' => 'se$sion']),
+            new SesApiAsyncAwsTransport(new SesClient(Configuration::create(['accessKeyId' => self::USER, 'accessKeySecret' => self::PASSWORD, 'region' => 'eu-west-2', 'sessionToken' => 'se$sion']), null, $client, $logger), $dispatcher, $logger),
+        ];
+
+        yield [
+            new Dsn('ses+api', 'example.com', self::USER, self::PASSWORD, 8080, ['session_token' => 'se$sion']),
+            new SesApiAsyncAwsTransport(new SesClient(Configuration::create(['accessKeyId' => self::USER, 'accessKeySecret' => self::PASSWORD, 'region' => 'eu-west-1', 'endpoint' => 'https://example.com:8080', 'sessionToken' => 'se$sion']), null, $client, $logger), $dispatcher, $logger),
+        ];
+
         yield [
             new Dsn('ses+https', 'default', self::USER, self::PASSWORD),
             new SesHttpAsyncAwsTransport(new SesClient(Configuration::create(['accessKeyId' => self::USER, 'accessKeySecret' => self::PASSWORD, 'region' => 'eu-west-1']), null, $client, $logger), $dispatcher, $logger),
@@ -102,6 +117,26 @@ public function createProvider(): iterable
             new SesHttpAsyncAwsTransport(new SesClient(Configuration::create(['accessKeyId' => self::USER, 'accessKeySecret' => self::PASSWORD, 'region' => 'eu-west-2']), null, $client, $logger), $dispatcher, $logger),
         ];
 
+        yield [
+            new Dsn('ses+https', 'default', self::USER, self::PASSWORD, null, ['session_token' => 'se$sion']),
+            new SesHttpAsyncAwsTransport(new SesClient(Configuration::create(['accessKeyId' => self::USER, 'accessKeySecret' => self::PASSWORD, 'region' => 'eu-west-1', 'sessionToken' => 'se$sion']), null, $client, $logger), $dispatcher, $logger),
+        ];
+
+        yield [
+            new Dsn('ses', 'default', self::USER, self::PASSWORD, null, ['session_token' => 'se$sion']),
+            new SesHttpAsyncAwsTransport(new SesClient(Configuration::create(['accessKeyId' => self::USER, 'accessKeySecret' => self::PASSWORD, 'region' => 'eu-west-1', 'sessionToken' => 'se$sion']), null, $client, $logger), $dispatcher, $logger),
+        ];
+
+        yield [
+            new Dsn('ses+https', 'example.com', self::USER, self::PASSWORD, 8080, ['session_token' => 'se$sion']),
+            new SesHttpAsyncAwsTransport(new SesClient(Configuration::create(['accessKeyId' => self::USER, 'accessKeySecret' => self::PASSWORD, 'region' => 'eu-west-1', 'endpoint' => 'https://example.com:8080', 'sessionToken' => 'se$sion']), null, $client, $logger), $dispatcher, $logger),
+        ];
+
+        yield [
+            new Dsn('ses+https', 'default', self::USER, self::PASSWORD, null, ['region' => 'eu-west-2', 'session_token' => 'se$sion']),
+            new SesHttpAsyncAwsTransport(new SesClient(Configuration::create(['accessKeyId' => self::USER, 'accessKeySecret' => self::PASSWORD, 'region' => 'eu-west-2', 'sessionToken' => 'se$sion']), null, $client, $logger), $dispatcher, $logger),
+        ];
+
         yield [
             new Dsn('ses+smtp', 'default', self::USER, self::PASSWORD),
             new SesSmtpTransport(self::USER, self::PASSWORD, null, $dispatcher, $logger),
diff --git a/src/Symfony/Component/Mailer/Bridge/Amazon/Transport/SesTransportFactory.php b/src/Symfony/Component/Mailer/Bridge/Amazon/Transport/SesTransportFactory.php
index d8e1657995246..65cb3db970c5e 100644
--- a/src/Symfony/Component/Mailer/Bridge/Amazon/Transport/SesTransportFactory.php
+++ b/src/Symfony/Component/Mailer/Bridge/Amazon/Transport/SesTransportFactory.php
@@ -52,6 +52,8 @@ public function create(Dsn $dsn): TransportInterface
                     'accessKeySecret' => $dsn->getPassword(),
                 ] + (
                     'default' === $dsn->getHost() ? [] : ['endpoint' => 'https://'.$dsn->getHost().($dsn->getPort() ? ':'.$dsn->getPort() : '')]
+                ) + (
+                    null === $dsn->getOption('session_token') ? [] : ['sessionToken' => $dsn->getOption('session_token')]
                 );
 
                 return new $class(new SesClient(Configuration::create($options), null, $this->client, $this->logger), $this->dispatcher, $this->logger);