diff --git a/composer.json b/composer.json
index 46398b8..b82c06b 100644
--- a/composer.json
+++ b/composer.json
@@ -32,7 +32,7 @@
         "ext-json": "*",
         "dotkernel/dot-event": "^4.0",
         "laminas/laminas-servicemanager": "^3.22 || ^4.0",
-        "symfony/mailer": "v7.1.6"
+        "symfony/mailer": "^v7.1.6"
     },
     "require-dev": {
         "laminas/laminas-coding-standard": "^3.0",
diff --git a/src/Factory/MailServiceAbstractFactory.php b/src/Factory/MailServiceAbstractFactory.php
index b03a8d5..1a82fd9 100644
--- a/src/Factory/MailServiceAbstractFactory.php
+++ b/src/Factory/MailServiceAbstractFactory.php
@@ -31,6 +31,7 @@
 use function is_object;
 use function is_string;
 use function is_subclass_of;
+use function rawurlencode;
 use function sprintf;
 
 class MailServiceAbstractFactory extends AbstractMailFactory
@@ -179,7 +180,7 @@ protected function setupTransportConfig(TransportInterface $transport): Transpor
     {
         if ($transport instanceof EsmtpTransport) {
             $user      = $this->mailOptions->getSmtpOptions()->getConnectionConfig()['username'];
-            $pass      = $this->mailOptions->getSmtpOptions()->getConnectionConfig()['password'];
+            $pass      = rawurlencode($this->mailOptions->getSmtpOptions()->getConnectionConfig()['password']);
             $tls       = $this->mailOptions->getSmtpOptions()->getConnectionConfig()['tls'] === false ? 'false' : null;
             $port      = $this->mailOptions->getSmtpOptions()->getPort();
             $host      = $this->mailOptions->getSmtpOptions()->getHost();