diff --git a/mail/mail.go b/mail/mail.go
index dbfb614..8fba041 100644
--- a/mail/mail.go
+++ b/mail/mail.go
@@ -14,12 +14,7 @@ import (
 	"gopkg.in/gomail.v2"
 )
 
-var (
-	// Mail 邮件服务实例
-	Mail *mail
-)
-
-type mail struct {
+type Mail struct {
 	conf       map[string]string
 	port       int
 	mailDialer *gomail.Dialer
@@ -30,24 +25,22 @@ type mail struct {
 // Author : go_developer@163.com<白茶清欢>
 //
 // Date : 1:32 上午 2021/8/13
-func NewMailMessage(fromMail string, fromMailName string, pass string, host string, port int) *mail {
-	if Mail == nil {
-		Mail = &mail{}
-		if len(fromMailName) == 0 {
-			fromMailName = "系统邮件"
-		}
-		Mail.conf = map[string]string{
-			"user":           fromMail,
-			"pass":           pass,
-			"host":           host,
-			"port":           fmt.Sprintf("%v", port),
-			"from_mail_name": fromMailName,
-		}
-
-		Mail.port = port
-		Mail.mailDialer = gomail.NewDialer(Mail.conf["host"], port, Mail.conf["user"], Mail.conf["pass"])
+func NewMailMessage(fromMail string, fromMailName string, pass string, host string, port int) *Mail {
+	m := &Mail{}
+	if len(fromMailName) == 0 {
+		fromMailName = "系统邮件"
 	}
-	return Mail
+	m.conf = map[string]string{
+		"user":           fromMail,
+		"pass":           pass,
+		"host":           host,
+		"port":           fmt.Sprintf("%v", port),
+		"from_mail_name": fromMailName,
+	}
+
+	m.port = port
+	m.mailDialer = gomail.NewDialer(m.conf["host"], port, m.conf["user"], m.conf["pass"])
+	return m
 }
 
 // BaseSend 基础邮件发送
@@ -55,7 +48,7 @@ func NewMailMessage(fromMail string, fromMailName string, pass string, host stri
 // Author : go_developer@163.com<白茶清欢>
 //
 // Date : 1:14 上午 2021/8/13
-func (m *mail) BaseSend(mailTo []string, subject string, body string) error {
+func (m *Mail) BaseSend(mailTo []string, subject string, body string) error {
 	message := gomail.NewMessage()
 	message.SetHeader("From", message.FormatAddress(m.conf["user"], m.conf["from_mail_name"])) //这种方式可以添加别名，即“XX官方”
 	//说明：如果是用网易邮箱账号发送，以下方法别名可以是中文，如果是qq企业邮箱，以下方法用中文别名，会报错，需要用上面此方法转码
@@ -75,7 +68,7 @@ func (m *mail) BaseSend(mailTo []string, subject string, body string) error {
 // Author : go_developer@163.com<白茶清欢>
 //
 // Date : 1:05 下午 2021/8/14
-func (m *mail) TplSend(mailTo []string, subject string, tpl string, bindData map[string]string) error {
+func (m *Mail) TplSend(mailTo []string, subject string, tpl string, bindData map[string]string) error {
 	var (
 		tplContent []byte
 		err        error