16. A processing system, comprising: a processor; and a memory coupled with the processor and storing instructions which, when executed by the processor, cause the processing system to perform a process that includes: intercepting emails sent by a first entity while the emails are being transmitted on a network; automatically constructing a knowledge profile of the first entity based on a plurality of sets of text from the intercepted emails; storing the knowledge profile as part of a knowledge base stored in a machine-accessible storage facility; in response to preparation of a particular email prepared by a second entity and intended for at least one other entity, identifying, prior to sending the particular email by the second entity, one or more suggested potential recipients as meeting one or more criteria based at least in part on a comparison of the knowledge profile of the one or more suggested potential recipients and text contained in the particular email prepared by the second entity; outputting a recommendation to include at least a first entity as a recipient of the particular email prepared by the second entity, the first entity meeting the one or more criteria and being one of the one or more suggested potential recipients; and providing a matching metric indicative of a relative strength of the recommendation for the one or more suggested potential recipients, the matching metric comprises a sum of confidence level values associated with the one or more suggested potential recipients.
16. A processing system, comprising: a processor; and a memory coupled with the processor and storing instructions which, when executed by the processor, cause the processing system to perform a process that includes: intercepting emails sent by a first entity while the emails are being transmitted on a network; automatically constructing a knowledge profile of the first entity based on a plurality of sets of text from the intercepted emails; storing the knowledge profile as part of a knowledge base stored in a machine-accessible storage facility; in response to preparation of a particular email prepared by a second entity and intended for at least one other entity, identifying, prior to sending the particular email by the second entity, one or more suggested potential recipients as meeting one or more criteria based at least in part on a comparison of the knowledge profile of the one or more suggested potential recipients and text contained in the particular email prepared by the second entity; outputting a recommendation to include at least a first entity as a recipient of the particular email prepared by the second entity, the first entity meeting the one or more criteria and being one of the one or more suggested potential recipients; and providing a matching metric indicative of a relative strength of the recommendation for the one or more suggested potential recipients, the matching metric comprises a sum of confidence level values associated with the one or more suggested potential recipients. 21. The processing system as recited in claim 16 , wherein the plurality of sets of text have been authored by the first entity.