diff --git a/backend/dto/response/email.go b/backend/dto/response/email.go
index 51571e31..78ef7568 100644
--- a/backend/dto/response/email.go
+++ b/backend/dto/response/email.go
@@ -1,6 +1,10 @@
 package response
 
-import "git.pcux.cn/xuans/Smail/models"
+import (
+	"encoding/json"
+
+	"git.pcux.cn/xuans/Smail/models"
+)
 
 type EmailResponseData struct {
 	models.Email  `xorm:"extends"`
@@ -12,6 +16,30 @@ type EmailResponseData struct {
 	IsBlacklisted bool `xorm:"-" json:"is_blacklisted"`
 }
 
+func (d *EmailResponseData) MarshalJSON() ([]byte, error) {
+	data, err := d.Email.MarshalJSON()
+	if err != nil {
+		return nil, err
+	}
+	var fields map[string]json.RawMessage
+	if err := json.Unmarshal(data, &fields); err != nil {
+		return nil, err
+	}
+	for name, value := range map[string]any{
+		"is_read":        d.IsRead,
+		"serial_number":  d.SerialNumber,
+		"ue_id":          d.UeId,
+		"is_blacklisted": d.IsBlacklisted,
+	} {
+		encoded, err := json.Marshal(value)
+		if err != nil {
+			return nil, err
+		}
+		fields[name] = encoded
+	}
+	return json.Marshal(fields)
+}
+
 type UserEmailUIDData struct {
 	models.UserEmail `xorm:"extends"`
 	SerialNumber     int `json:"serial_number"`