Categorizing mails by safety level

A multiple tier system is provided for classifying the safety level of an electronic message. The multiple tier system can include safety classification levels of safe, medium safe, and unsafe. Display settings associated with each safety level govern how messages are initially displayed to a user. A user interface distinguishes messages using a safety information interface. The safety information interface provides information about the message and allows a user to provide input regarding the desirability of the message. Upon receiving user input, the safety level of the message may be changed and other processing related to the message can be performed. The system also provides a mechanism for detecting and unsubscribing from a mailing list.