优化

@@ -245,11 +245,16 @@ class MailListV2 extends Base {
             return $v;
         },$lists?:[]);
 
-        // 总数
-        if(empty($where['flagged'])){
-            $total  = db()->cache($this->cache)->count(sprintf($sql,"count(*)"));
+        if($lists){
+            // 总数
+            if(empty($where['flagged'])){
+                $total  = db()->cache($this->cache)->count(sprintf($sql,"count(*)"));
+            }else{
+                $total  = db()->cache($this->cache)->count("select count(*) from (".sprintf($sql,"`id`").' group by `udate`) as t');
+            }
+
         }else{
-            $total  = db()->cache($this->cache)->count("select count(*) from (".sprintf($sql,"`id`").' group by `udate`) as t');
+            $total = 0;
         }