Methods and systems of electronic message threading and ranking

A system for organizing a plurality of e-mail messages, the system comprising:

• a processor;
• and
• a memory in communication with the processor and configured to store a set of instructions which when executed by the processor configure the processor to:
• receive a plurality of processed e-mail messages, the plurality of processed e-mail messages including a plurality of transactional e-mail messages and a plurality of derived e-mail messages derived from the plurality of e-mail messages in response to extracting information from message attribute data of one or more of the plurality of transactional e-mail messages to create the plurality of derived e-mail messages;
• determine an e-mail rank for each e-mail message in the plurality of processed e-mail messages as a weighted average of a sender value determined for a sender identifier related to the e-mail message and a recipient value determined for each of one or more recipient identifiers related to the e-mail message, the sender value further quantifying text contributed to the e-mail message by the sender of the e-mail message;
• determine a plurality of e-mail threads associated with the plurality of processed e-mail messages, each of the plurality of e-mail threads including one or more of the plurality of processed e-mail messages;
• determine a thread rank for each e-mail thread in the plurality of e-mail threads based on a weighted average of one or more e-mail ranks associated with the one or more of the plurality of processed e-mail messages in the e-mail thread;
• organize the plurality of processed e-mail messages based on the thread rank of each e-mail thread in the plurality of e-mail threads;
• generating information configured to display on a graphical user interface to electronic discovery investigators the organized plurality of processed e-mail messages;
• and
• wherein in determining the plurality of e-mail threads, the processor is further configured to:
• determine whether an e-mail message to be placed in an e-mail thread is a duplicate of an e-mail message in the e-mail thread;
• and
• associate the e-mail message to be placed in the e-mail thread with the e-mail thread only if the e-mail message to be placed in the e-mail thread is determined not to be a duplicate of any e-mail message in the e-mail thread.

A non-transitory computer-readable medium storing computer-executable code for organizing a plurality of e-mail messages, the non-transitory computer-readable medium comprising:

• code for receiving a plurality of processed e-mail messages, the plurality of processed e-mail messages including a plurality of transactional e-mail messages and a plurality of derived e-mail messages derived from the plurality of e-mail messages in response to extracting information from message attribute data of one or more of the plurality of transactional e-mail messages to create the plurality of derived e-mail messages;
• code for determining an e-mail rank for each e-mail message in the plurality of processed e-mail messages as a weighted average of a sender value for a sender identifier related to the e-mail message and a recipient value for each of one or more recipient identifiers related to the e-mail message, the sender value further quantifying text contributed to the e-mail message by the sender of the e-mail message;
• code for determining a plurality of e-mail threads associated with the plurality of processed e-mail messages, each of the plurality of e-mail threads including one or more of the plurality of processed e-mail messages;
• code for determining a thread rank for each e-mail thread in the plurality of e-mail threads based on a weighted average of one or more e-mail ranks associated with the one or more of the plurality of processed e-mail messages associated with the e-mail thread;
• code for organizing the plurality of processed e-mail messages based on the thread rank of each e-mail thread in the plurality of e-mail threads;
• code for generating information configured to display on a graphical user interface to electronic discovery investigators the organized plurality of processed e-mail messages;
• and
• wherein the code for determining the plurality of e-mail threads comprises:
• code for determining whether an e-mail message to be placed in an e-mail thread is a duplicate of an e-mail message in the e-mail thread;
• and
• code for associating the e-mail message to be placed in the e-mail thread with the e-mail thread only if the e-mail message to be placed in the e-mail thread is determined not to be a duplicate of any e-mail message in the e-mail thread.