diff --git a/server/mailserver/mail/mailmgr.go b/server/mailserver/mail/mailmgr.go
index 8e886592..b4616c9b 100644
--- a/server/mailserver/mail/mailmgr.go
+++ b/server/mailserver/mail/mailmgr.go
@@ -311,7 +311,7 @@ func (this *mailMgr) pullEvent() {
 		return
 	}
 	this.pullingEvent = true
-	f5.GetJsStyleDb().SelectCustomQuery(
+	go f5.GetJsStyleDb().SelectCustomQuery(
 		constant.MAIL_DB,
 		fmt.Sprintf("SELECT * FROM t_event WHERE idx > %d;", this.lastSyncEventIdx),
 		func(err error, ds *f5.DataSet) {