A system and method for automatically determining whether or not original message text should be included in a reply electronic message is provided. In one broad aspect, the original message text is included in the reply electronic message as a function of the original message. In a first example, the original message text is included as a function of a domain name of an originating address. In a second example, the original message text is included as a function of maintained information used for determining if original message text should be included in reply electronic messages. In a third example, the original message text is included as a function of an indicative encoding inside the original electronic message. In a fourth example, the original message text is included as a function of maintained information used for detecting address aliases. In another broad aspect, the original electronic message is encoded with an indicative encoding as to whether or not a reply electronic message should include the original message text.