If you are running the Notes R5 client and you cannot see certain mail features, such as the Tools button in the action bar, it is likely because your Domino administrator has not updated your mail server to Release 5. Without Release 5 mail server support, you cannot use the Notes Release 5 mail template that contains this functionality. The Tools button helps you change mail preferences, specify out-of-office settings, insert signatures, and use other features new to Release 5.