Systems and methods are provided for fine level access control over message content in an electronic messaging system. Access criteria associated with the message content define requirements that a user must satisfy in order to perform specified actions on message content. The user's complete profile is examined at run time and compared to access criteria to make a real time decision about the level of access that a user should have to message content. Depending on the access criteria associated with content, stronger authentication or weaker authentication of the user profile information may be performed on the user profile to determine the level of access that should be granted to the user.