A system is presented to allow users in an instant messaging environment to edit already-exchanged messages dynamically, and resend the edited version of the message to the target users, as an example. The newly edited message received by the second user is clearly understandable because the corrected parts of the message have been tagged. Depending on the implementation, either a new complete and corrected message is sent, or the sent message indicates the recent editions. The advantage of this solution is that all that the altering user should do is to go over the communication text, change or edit the text, and press ENTER.