diff --git a/makedown/optimization.md b/makedown/optimization.md
index 60cee889..96b53600 100644
--- a/makedown/optimization.md
+++ b/makedown/optimization.md
@@ -938,6 +938,7 @@ message ResMailList{
  map<int32, MailInfo> MailList = 1;
 }
 message MailInfo{
+ int32 Id = 1; // 邮件id
  string Title = 2; // 标题
  string Content = 3; // 内容
  int32 Time = 4; // 时间
diff --git a/proto/Gameapi.proto b/proto/Gameapi.proto
index 5121cd01..54ee527f 100644
--- a/proto/Gameapi.proto
+++ b/proto/Gameapi.proto
@@ -2990,6 +2990,7 @@ message ResMailList{
 	map<int32, MailInfo> MailList = 1;
 }
 message MailInfo{
+	int32 Id = 1; // 邮件id
 	string Title = 2; // 标题
 	string Content = 3; // 内容
 	int32 Time = 4; // 时间