邮件：定时循环邮件

shared/db/GroupMail.ts

@@ -33,6 +33,7 @@ export default class GroupMail extends MailTemp {
                 {'roleStatus.roleId': roleId}, 
                 {'roleStatus.status': { $in: [ MAIL_STATUS.CREATE, MAIL_STATUS.READ, MAIL_STATUS.RECEIVED ] }}
             ], 
+            sendTime: { $lte: nowSeconds() } , 
             endTime: { $gte: nowSeconds() } 
         }).populate('mail').lean();
         return result;