@ -127,7 +127,10 @@ func Send(msg *Message) (int, error) {
return 0, fmt.Errorf("empty email body")
}
auth := smtp.PlainAuth("", setting.MailService.User, setting.MailService.Passwd, host[0])
var auth smtp.Auth
if len(setting.MailService.Passwd) > 0 {
auth = smtp.PlainAuth("", setting.MailService.User, setting.MailService.Passwd, host[0])
if msg.Massive {
// send mail to multiple emails one by one