diff --git a/server/mailserver/common/types.go b/server/mailserver/common/types.go
index 091009ae..0612f3cb 100644
--- a/server/mailserver/common/types.go
+++ b/server/mailserver/common/types.go
@@ -49,6 +49,7 @@ type PlayerMgr interface {
 type Mail interface {
 	GetMailId() int64
 	IsValid(Player) bool
+	HasAttachment() bool
 	GetExpireTime() int32
 	TraverseAttachment(cb func(int32, int32))
 }
diff --git a/server/mailserver/constant/constant.go b/server/mailserver/constant/constant.go
index 99fc9cee..6e931f59 100644
--- a/server/mailserver/constant/constant.go
+++ b/server/mailserver/constant/constant.go
@@ -21,6 +21,7 @@ const (
 	INBOX_STATE_NONE = 0
 	INBOX_STATE_READ = 1
 	INBOX_STATE_DELETED = 2
+	INBOX_STATE_RECEIVED = 3
 )
 
 const (
diff --git a/server/mailserver/mail/mail.go b/server/mailserver/mail/mail.go
index b11a65e7..42afa5b1 100644
--- a/server/mailserver/mail/mail.go
+++ b/server/mailserver/mail/mail.go
@@ -77,6 +77,10 @@ func (this *mail) IsValid(hum common.Player) bool {
 	return false
 }
 
+func (this *mail) HasAttachment() bool {
+	return len(this.attachments) > 0
+}
+
 func (this *mail) GetMailId() int64 {
 	return this.mailId
 }
diff --git a/server/mailserver/player/player.go b/server/mailserver/player/player.go
index 2b774464..f78865dd 100644
--- a/server/mailserver/player/player.go
+++ b/server/mailserver/player/player.go
@@ -153,24 +153,28 @@ func (this *player) DeleteMails(mails []common.Mail) error {
 		if m.IsValid(this) {
 			mi := this.getInbox(m.GetMailId())
 			if mi == nil {
-				err := model.Inbox.Delete(this.GetAccountId(), m.GetMailId(), nowTime, m.GetExpireTime())
-				if err != nil {
-					resultErr = err
-					break
+				if m.HasAttachment() {
+					err := model.Inbox.Delete(this.GetAccountId(), m.GetMailId(), nowTime, m.GetExpireTime())
+					if err != nil {
+						resultErr = err
+						break
+					}
+					mi = new(inbox)
+					mi.mailId = m.GetMailId()
+					mi.state = constant.INBOX_STATE_DELETED
+					mi.expireTime = m.GetExpireTime()
+					this.inboxHash[mi.mailId] = mi
 				}
-				mi = new(inbox)
-				mi.mailId = m.GetMailId()
-				mi.state = constant.INBOX_STATE_DELETED
-				mi.expireTime = m.GetExpireTime()
-				this.inboxHash[mi.mailId] = mi
 			} else if mi.state != constant.INBOX_STATE_DELETED {
-				err := model.Inbox.Delete(this.GetAccountId(), m.GetMailId(), nowTime, m.GetExpireTime())
-				if err != nil {
-					resultErr = err
-					break
+				if !m.HasAttachment() || mi.state != constant.INBOX_STATE_RECEIVED {
+					err := model.Inbox.Delete(this.GetAccountId(), m.GetMailId(), nowTime, m.GetExpireTime())
+					if err != nil {
+						resultErr = err
+						break
+					}
+					mi.state = constant.INBOX_STATE_DELETED
+					mi.expireTime = m.GetExpireTime()
 				}
-				mi.state = constant.INBOX_STATE_DELETED
-				mi.expireTime = m.GetExpireTime()
 			}
 		}
 	}