5. The system of claim 2 , wherein said inference data reception module configured to receive at least the first inference data and the second inference data comprises: an inference data reception module configured to receive an indication of an action executed in connection with the particular item and performed, at least in part, by the first authoring user.
2. The system of claim 1 , wherein said inference data acquisition module configured to acquire inference data including a first inference data that indicates an inferred mental state of a first authoring user in connection with a particular item of an electronic message and a second inference data that indicates an inferred mental state of a second authoring user in connection with the particular item of the electronic message comprises: an inference data reception module configured to receive at least the first inference data and the second inference data.