20. The system of claim 12 , wherein the AI is a decision tree AI system, comprising decision nodes and conclusion nodes, each decision node having outcomes connecting the decision node to another decision node or to a conclusion node.
12. A computerized system for classifying and distributing an email message to multiple recipients having different security levels, the system comprising: at least one processor; a memory device having computer readable instructions stored thereon for execution by the at least one processor, causing the at least one processor to: (a) select a segment of the email message; (b) automatically analyze contents of the selected segment in real time by using an artificial intelligence (AI) system, comprising analyzing a newly typed string of characters of the segment in real time in the context of the previously entered content of the segment; (c) automatically classify the segment, based on results of the analysis performed by the artificial intelligence system, and in accordance with a set of classification options characterizing a type of information contained in the segment; (d) automatically mark the segment in accordance with a respective classification option to produce a marked segment; (e) automatically classify the email message based on classifications of segments of the email message; (f) automatically redact the email message in real time in accordance with a respective clearance level of a recipient of the email message, producing a redacted email message, comprising: (i) arranging recipients of the email message in a hierarchy in accordance with respective clearance levels such that a recipient with a higher clearance level occupies a higher level in the hierarchy in comparison to a recipient with a lower clearance level; (ii) redacting marked segments for recipients in a particular level in the hierarchy in real time concurrently with the redacting the marked segments for recipients at an immediate lower level in the hierarchy; and (g) distribute the redacted email message to the recipients of a particular level in the hierarchy concurrently with the redacting marked segments for the recipients at the immediate lower level in the hierarchy.