diff --git a/Model/Quote/SetQuoteAddresses.php b/Model/Quote/SetQuoteAddresses.php
index 199125b0..7013ac1f 100644
--- a/Model/Quote/SetQuoteAddresses.php
+++ b/Model/Quote/SetQuoteAddresses.php
@@ -94,6 +94,11 @@ public function setAddresses(
             $quote->setExtensionAttributes($quote->getExtensionAttributes());
             $quote->getShippingAddress()->setCollectShippingRates(true);
         }
+
+        if (!$quote->getCustomerEmail()) {
+            $quote->setCustomerEmail($billingAddress->getEmail());
+        }
+
         $quote->setDataChanges(true);
         $quote->collectTotals();
         $this->quoteResource->save($quote);