diff --git a/packages/twenty-server/src/modules/messaging/message-import-manager/services/messaging-message-list-fetch.service.ts b/packages/twenty-server/src/modules/messaging/message-import-manager/services/messaging-message-list-fetch.service.ts
index 79b0db0482a..031959aed53 100644
--- a/packages/twenty-server/src/modules/messaging/message-import-manager/services/messaging-message-list-fetch.service.ts
+++ b/packages/twenty-server/src/modules/messaging/message-import-manager/services/messaging-message-list-fetch.service.ts
@@ -94,7 +94,7 @@ export class MessagingMessageListFetchService {
       const isFullSync =
         messageLists.every(
           (messageList) => !isNonEmptyString(messageList.previousSyncCursor),
-        ) && isNonEmptyString(messageChannel.syncCursor);
+        ) && !isNonEmptyString(messageChannel.syncCursor);
 
       let totalMessagesToImportCount = 0;