We introduce a mobile e-mail communication platform which employs smart card to provide authentication and confidentiality for e-mail exchange. The security of the system is incorporated by PGP based asymmetric encryption. Smart card is used to store the mail account information, as well as PGP private key of each user to offer further security, authentication and mobility to the system. The real contribution of our scheme is the absorption of all the complexity of PGP to a PIN based smart card by causing no compromise on the security of PGP. We use JavaCard technology in real life implementation of the proposed platform.