diff --git a/pkg/api/core/mail/v0/mail.go b/pkg/api/core/mail/v0/mail.go
index 64df950d..150853c2 100644
--- a/pkg/api/core/mail/v0/mail.go
+++ b/pkg/api/core/mail/v0/mail.go
@@ -52,6 +52,7 @@ func SendMail(d mailStruct.Mail) error {
 		"From:" + from.String() + "\r\n" +
 		"To:" + to.String() + "\r\n" +
 		encodeSubject(d.Subject) + "\r\n" +
+		"Content-Type: text/plain; charset=UTF-8\r\n" +
 		"\r\n" + d.Content + "\r\n"
 
 	auth := smtp.PlainAuth("", config.Conf.Mail.User, config.Conf.Mail.Pass, config.Conf.Mail.Host)