Microsoft Technology Licensing, LLC

Paul K Kroman

Anoop Gupta

Selvaraj Nalliah

Gary William Hall

Garrett R Vargas

Eian D Counts

William Scott Stauber

Owen W Lloyd

Systems and methods are disclosed that facilitate identifying messages generated on a mobile device while the device is offline as requiring encryption, storing the messages in a message outbox with a flag indicating that encryption is required, and identifying recipients of the flagged messages to generate a recipient list. The recipient list can be piggybacked on a server synchronization request when the mobile device enters a period of online activity, and a server can return public keys associated with identified recipients to permit an encryption component, such as a secure/multipurpose Internet mail extension protocol (S/MIME) encryption component, in the mobile device to encrypt the messages.

Dynamically resolving recipients to retrieve public keys during send/receive

Systems and methods are disclosed that facilitate minimizing data transfer from a post office protocol (POP) server to a client device by employing a date filter with a predefined date range and applying a message body size threshold above which only a message header will be downloaded to conserve bandwidth and/or memory space on the client device. A user can request download of a message for which only a message header was originally downloaded if the header comprises information of interest to the user.

Minimizing data transfer from POP3 servers

Growing community of inventors

Redmond, WA, United States of America

Paul K Kroman