diff --git a/packages/twenty-server/src/modules/messaging/message-import-manager/services/messaging-save-messages-and-enqueue-contact-creation.service.ts b/packages/twenty-server/src/modules/messaging/message-import-manager/services/messaging-save-messages-and-enqueue-contact-creation.service.ts
index 4080dc08f..b92f99517 100644
--- a/packages/twenty-server/src/modules/messaging/message-import-manager/services/messaging-save-messages-and-enqueue-contact-creation.service.ts
+++ b/packages/twenty-server/src/modules/messaging/message-import-manager/services/messaging-save-messages-and-enqueue-contact-creation.service.ts
@@ -83,6 +83,7 @@ export class MessagingSaveMessagesAndEnqueueContactCreationService {
                   isGroupEmail(participant.handle);
 
                 const shouldCreateContact =
+                  !!participant.handle &&
                   !isParticipantConnectedAccount &&
                   !isExcludedByNonProfessionalEmails &&
                   !isExcludedByGroupEmails &&
diff --git a/packages/twenty-server/src/modules/messaging/message-import-manager/utils/filter-emails.util.ts b/packages/twenty-server/src/modules/messaging/message-import-manager/utils/filter-emails.util.ts
index 17dacb92c..ffdbef989 100644
--- a/packages/twenty-server/src/modules/messaging/message-import-manager/utils/filter-emails.util.ts
+++ b/packages/twenty-server/src/modules/messaging/message-import-manager/utils/filter-emails.util.ts
@@ -66,10 +66,12 @@ const filterOutInternals = (
     }
 
     const primaryHandleDomain = getDomainNameByEmail(primaryHandle);
-    const isAllHandlesFromSameDomain = message.participants.every(
-      (participant) =>
-        getDomainNameByEmail(participant.handle) === primaryHandleDomain,
-    );
+    const isAllHandlesFromSameDomain = message.participants
+      .filter((participant) => !!participant.handle)
+      .every(
+        (participant) =>
+          getDomainNameByEmail(participant.handle) === primaryHandleDomain,
+      );
 
     if (isAllHandlesFromSameDomain) {
       return false;