diff --git a/frappe/core/doctype/communication/mixins.py b/frappe/core/doctype/communication/mixins.py
index 7b6427d1c2..52ea93d829 100644
--- a/frappe/core/doctype/communication/mixins.py
+++ b/frappe/core/doctype/communication/mixins.py
@@ -70,7 +70,7 @@ class CommunicationEmailMixin:
 		if include_sender:
 			cc.append(self.sender_mailid)
 		if is_inbound_mail_communcation:
-			if (doc_owner := self.get_owner()) not in frappe.STANDARD_USERS:
+			if (doc_owner := self.get_owner()) and (doc_owner not in frappe.STANDARD_USERS):
 				cc.append(doc_owner)
 			cc = set(cc) - {self.sender_mailid}
 			cc.update(self.get_assignees())
@@ -216,7 +216,11 @@ class CommunicationEmailMixin:
 			"reference_name": self.reference_name,
 			"reference_type": self.reference_doctype,
 		}
-		return ToDo.get_owners(filters)
+		
+		if self.reference_doctype and self.reference_name:
+			return ToDo.get_owners(filters)
+		else:
+			return []
 
 	@staticmethod
 	def filter_thread_notification_disbled_users(emails):
diff --git a/frappe/email/smtp.py b/frappe/email/smtp.py
index 5e1b5ef296..3b22bc4ce4 100644
--- a/frappe/email/smtp.py
+++ b/frappe/email/smtp.py
@@ -69,9 +69,7 @@ class SMTPServer:
 
 		if not self.server:
 			frappe.msgprint(
-				_(
-					"Email Account not setup. Please create a new Email Account from Settings > Email Account"
-				),
+				_("Email Account not setup. Please create a new Email Account from Settings > Email Account"),
 				raise_exception=frappe.OutgoingEmailError,
 			)