Hackproof Email provides information on how to send your email securely using RMail, the leading secure email system. It covers using RMail’s patented registered email service, which is legally as acceptable as the post office’s registered mail. It also instructs how to use RMail’s patented E-Sign service enabling valid digital signatures. RMail uses unique easy-to-use encryption devices, and its digital services are compatible with all email software used by senders or recipients.