diff --git a/src/actions/EmailAction.lua b/src/actions/EmailAction.lua
index 163000b..eea28fd 100644
--- a/src/actions/EmailAction.lua
+++ b/src/actions/EmailAction.lua
@@ -50,7 +50,7 @@ function _M.listRpc(agent, data)
 			end
 			if flag and ( not email.mid or tonum(email.mid) == mid ) 
 				and ( not email.endtime or tonum(email.endtime) > now )then
-				local time = math.max(tonum(email.timestamp, 0) , email.createtime)
+				local time = math.max(tonum(email.timestamp, 0) , tonum(email.createtime))
 				redisproxy:insertEmail({
 					roleId = roleId, 
 					emailId = 0,
--
libgit2 0.21.2