diff --git a/composer.json b/composer.json
index e77ca55..8999aac 100644
--- a/composer.json
+++ b/composer.json
@@ -31,7 +31,6 @@
   },
   "require": {
     "php": "^7",
-    "php-http/guzzle6-adapter": "^2.0",
     "omnipay/common": "^3.0",
     "stripe/stripe-php": "^7.75"
   },
diff --git a/src/Messages/AbstractCheckoutRequest.php b/src/Messages/AbstractCheckoutRequest.php
index e17c7c5..46c883b 100644
--- a/src/Messages/AbstractCheckoutRequest.php
+++ b/src/Messages/AbstractCheckoutRequest.php
@@ -25,4 +25,24 @@ public function setApiKey($value): AbstractRequest
     {
         return $this->setParameter('apiKey', $value);
     }
+
+    /**
+     * Get the customer email.
+     *
+     * @return string|null
+     */
+    public function getCustomerEmail()
+    {
+        return $this->getParameter('customerEmail');
+    }
+
+    /**
+     * Set the customer email.
+     *
+     * @return AbstractRequest provides a fluent interface.
+     */
+    public function setCustomerEmail($value): AbstractRequest
+    {
+        return $this->setParameter('customerEmail', $value);
+    }
 }
diff --git a/src/Messages/PurchaseRequest.php b/src/Messages/PurchaseRequest.php
index c917afe..2c7f4ad 100644
--- a/src/Messages/PurchaseRequest.php
+++ b/src/Messages/PurchaseRequest.php
@@ -31,6 +31,7 @@ public function sendData($data)
         $session = \Stripe\Checkout\Session::create(
             [
                 'client_reference_id' => $this->getTransactionId(),
+                'customer_email' => $this->getCustomerEmail(),
                 'payment_method_types' => ['card'],
                 'payment_intent_data' => [
                     'description' => $this->getDescription(),