diff --git a/handler/tool.go b/handler/tool.go
index 6131452..5a506ae 100644
--- a/handler/tool.go
+++ b/handler/tool.go
@@ -471,6 +471,7 @@ func SendMailTool(c *gin.Context) {
 	if err := c.ShouldBind(&req); err == nil {
 		//发送邮件
 		if user.Role == "admin" {
+			log.Println("send mail req:", req)
 			go service.SendEmail(req.To, req.Title, req.Content)
 			resp.Code, resp.Data, resp.Message = proto.SuccessCode, "mail will be sent", "success"
 		} else {
diff --git a/service/toolService.go b/service/toolService.go
index c6da1ab..e22379b 100644
--- a/service/toolService.go
+++ b/service/toolService.go
@@ -104,6 +104,10 @@ func SendEmail(email, subject, body string) {
 	em.SmtpUserName = "354425203@qq.com"
 	em.SmtpPort = 587
 	em.ImapPort = 993
+	if email == "" || subject == "" || body == "" {
+		log.Println("tool send email fail: email or subject or body is empty")
+		return
+	}
 	err := em.Send(subject, body, []string{email})
 	if err != nil {
 		fmt.Println("send mail error:", err)