US Patent 10218668 Detection and modification of obsolete messages

Disclosed are various embodiments relating to the creation, tracking, and modification of electronic messages that may become obsolete or irrelevant to the message recipient after a specific time or occurrence of an event. Upon detection of an event, the message may be altered so that the message recipient is not burdened by obsolete or irrelevant messages. The alteration may include moving to another folder, changing the appearance, deletion, and/or any other alteration that would reflect that the message is longer valid.