Systems and methods for messaging and presence modifcation

An electronic message modifying systems and methods are disclosed. The system includes a sending terminal, at least one modification parameters database, which contains a plurality of modification parameters, at least one message modification agent and a recipient moiety, including a message user agent. The modification parameters in the database are updated dynamically. The method includes sending a message, obtaining at least one modification parameter, from a database which contains a plurality of modification parameters, applying to the message at least one modification parameter by a message modification agent and delivering a modified message to the recipient.