diff --git a/internal/repo/user_external_login/user_external_login_repo.go b/internal/repo/user_external_login/user_external_login_repo.go
index c797e461d..b5cf85e86 100644
--- a/internal/repo/user_external_login/user_external_login_repo.go
+++ b/internal/repo/user_external_login/user_external_login_repo.go
@@ -87,7 +87,7 @@ func (ur *userExternalLoginRepo) GetByUserID(ctx context.Context, provider, user
 func (ur *userExternalLoginRepo) GetUserExternalLoginList(ctx context.Context, userID string) (
 	resp []*entity.UserExternalLogin, err error) {
 	resp = make([]*entity.UserExternalLogin, 0)
-	err = ur.data.DB.Context(ctx).Where("user_id = ?", userID).Find(&resp)
+	err = ur.data.DB.Context(ctx).Where("user_id = ?", userID).OrderBy("updated_at DESC").Find(&resp)
 	if err != nil {
 		err = errors.InternalServer(reason.DatabaseError).WithError(err).WithStack()
 	}
diff --git a/internal/service/notification/new_question_notification.go b/internal/service/notification/new_question_notification.go
index 2f83042b2..0a5471873 100644
--- a/internal/service/notification/new_question_notification.go
+++ b/internal/service/notification/new_question_notification.go
@@ -238,6 +238,19 @@ func (ns *ExternalNotificationService) syncNewQuestionNotificationToPlugin(ctx c
 				}
 			}
 
+			// Get all external logins as fallback
+			externalLogins, err := ns.userExternalLoginRepo.GetUserExternalLoginList(ctx, subscriberUserID)
+			if err != nil {
+				log.Errorf("get user external login list failed for user %s: %v", subscriberUserID, err)
+			} else if len(externalLogins) > 0 {
+				newMsg.ReceiverExternalID = externalLogins[0].ExternalID
+				if len(externalLogins) > 1 {
+					log.Debugf("user %s has %d SSO logins, using most recent: provider=%s",
+						subscriberUserID, len(externalLogins), externalLogins[0].Provider)
+				}
+			}
+
+			// Try to get external login specific to this plugin (takes precedence over fallback)
 			userInfo, exist, err := ns.userExternalLoginRepo.GetByUserID(ctx, fn.Info().SlugName, subscriberUserID)
 			if err != nil {
 				log.Errorf("get user external login info failed: %v", err)
diff --git a/internal/service/notification_common/notification.go b/internal/service/notification_common/notification.go
index 0bbd1865f..94ce86b16 100644
--- a/internal/service/notification_common/notification.go
+++ b/internal/service/notification_common/notification.go
@@ -423,6 +423,13 @@ func (ns *NotificationCommon) syncNotificationToPlugin(ctx context.Context, objI
 		}
 	}
 
+	externalLogins, err := ns.userExternalLoginRepo.GetUserExternalLoginList(ctx, msg.ReceiverUserID)
+	if err != nil {
+		log.Errorf("get user external login list failed for user %s: %v", msg.ReceiverUserID, err)
+	} else if len(externalLogins) > 0 {
+		pluginNotificationMsg.ReceiverExternalID = externalLogins[0].ExternalID
+	}
+
 	_ = plugin.CallNotification(func(fn plugin.Notification) error {
 		userInfo, exist, err := ns.userExternalLoginRepo.GetByUserID(ctx, fn.Info().SlugName, msg.ReceiverUserID)
 		if err != nil {