System and method for pushing encrypted information between a host system and a mobile data communication device

A method for redirecting messages between an Internet Service Provider (ISP) host system and a plurality of mobile devices, the method comprising the steps of:

• configuring redirection settings for one or more mobile device users at the ISP host system;
• receiving incoming messages directed to a first address at the ISP host system from a plurality of message senders;
• in response to the redirection settings, continuously encrypting and redirecting the incoming messages from the ISP host system to the mobile device via a redirector host system;
• receiving encrypted outgoing messages generated and encrypted at the mobile communications device at the redirector host system;
• decrypting the received encrypted outgoing messages to recover the outgoing messages;
• configuring address information of the outgoing messages so that the first address is used as an originating address of the outgoing messages;
• and,
• transmitting the configured outgoing messages to message recipients.