Access management for messaging systems and methods

An exemplary system includes an access management facility and a message processing facility communicatively coupled to the access management facility. The access management facility is configured to generate and activate an access code, and initiate providing of the access code to a potential message source. The message processing facility is configured to receive an incoming message, determine whether the incoming message includes the access code, deliver the incoming message to a user if the incoming message is determined to include the access code, and not deliver the incoming message to the user if the incoming message is determined not to include the access code. In certain implementations, the access code is used in conjunction with a set of authorized message sources for selectively filtering the incoming message. In certain implementations, at least one tool is provided, the tool being configured to enable the user to manage the access code.