Blackberry Corporation

Andrew J Legg

Allan David Lewis

Jeffrey R Schnurr

Carl Lloyd Cherry

Anand Sinha

A system for managing the exchange of data items between a mail database on a mail server and a mobile communication device operable to send and receive data items over a wireless network, wherein the mail database and the mobile communication device are associated with a user address and wherein the data items are stored in the mail database and referenced by corresponding mail database identifiers, includes a state database associated with the user address. The state database is operable to receive and store the mail database identifiers corresponding to the data items stored in the mail database.

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Kitchener, Canada

Andrew J Legg