diff --git a/packages/nylas-core/models/account/message.js b/packages/nylas-core/models/account/message.js
index e5fffdacc..4db6f4d24 100644
--- a/packages/nylas-core/models/account/message.js
+++ b/packages/nylas-core/models/account/message.js
@@ -109,6 +109,7 @@ module.exports = (sequelize, Sequelize) => {
           unread: this.unread,
           starred: this.starred,
           folder: this.folder,
+          thread_id: this.threadId,
         };
       },
     },