Try #1 Sending mails though linux mail command - Untested: https://github.com/kataras/iris/issues/166

config/mail.go

@@ -10,6 +10,11 @@ type Mail struct {
 	Username string
 	// Password is the auth password for the sender
 	Password string
+	// UseCommand enable it if you want to send e-mail with the mail command  instead of smtp
+	//
+	// Host,Port & Password will be ignored
+	// ONLY FOR UNIX
+	UseCommand bool
 }
 
 // DefaultMail returns the default configs for Mail