ref

application/Espo/Core/Mail/Importer.php

@@ -158,13 +158,10 @@ class Importer
         $ccArr = $parser->getAddressList($message, 'cc');
         $replyToArr = $parser->getAddressList($message, 'reply-To');
 
-        if (count($fromArr)) {
-            $email->set('from', $fromArr[0]);
-        }
-
-        $email->set('to', implode(';', $toArr));
-        $email->set('cc', implode(';', $ccArr));
-        $email->set('replyTo', implode(';', $replyToArr));
+        $email->setFromAddress($fromArr[0] ?? null);
+        $email->setToAddressList($toArr);
+        $email->setCcAddressList($ccArr);
+        $email->setReplyToAddressList($replyToArr);
 
         $addressNameMap = $parser->getAddressNameMap($message);
 

application/Espo/Entities/Email.php

@@ -413,6 +413,46 @@ class Email extends Entity
         return $this;
     }
 
+    /**
+     * @param string[] $addressList
+     */
+    public function setToAddressList(array $addressList): self
+    {
+        $this->set('to', implode(';', $addressList));
+
+        return $this;
+    }
+
+    /**
+     * @param string[] $addressList
+     */
+    public function setCcAddressList(array $addressList): self
+    {
+        $this->set('cc', implode(';', $addressList));
+
+        return $this;
+    }
+
+    /**
+     * @param string[] $addressList
+     */
+    public function setBccAddressList(array $addressList): self
+    {
+        $this->set('bcc', implode(';', $addressList));
+
+        return $this;
+    }
+
+    /**
+     * @param string[] $addressList
+     */
+    public function setReplyToAddressList(array $addressList): self
+    {
+        $this->set('replyTo', implode(';', $addressList));
+
+        return $this;
+    }
+
     public function addToAddress(string $address): self
     {
         $list = $this->getToAddressList();