The E-mail messaging is one of the most popular uses of the Internet. Electronic mail, most commonly referred to as email or e-mail. This is a method of exchanging digital messages from an author to one or more recipients. Email servers accept, forward, deliver, and store messages. Neither the users nor their computers are required to be online simultaneously; they need connect only briefly, typically to an email server, for as long as it takes to send or receive messages. one well known scheme, called PGP (Pretty Good Privacy) is proposed for personal security of E-mail messages, but it can transmit encrypted message to single recipient only,i.e. ,the same encrypted message cannot be transmitted to the multiple recipients if Cc and Bcc options are used. This paper proposes two modifications of the PGP that avoid. The limitation of the PGP of not transmitting same encrypted message to multiple recipients. The basic idea is that a group comprising To, Cc and Bcc recipients is initially formed, a group key among them is generated using any group key generation scheme, which is then used.