System for reminding a sender of an email if recipient of the email does not respond by a selected time set by the sender

摘要

A system for warning the sender of e-mail messages if the messages are not received is described. The system permits the sender of a message to designate whether the sender wishes to be warned in case the message is not opened by the recipient prior to a time and date specified by the sender. The sender's system maintains a database of such messages, and automatically monitors incoming messages and updates the database as responses are received from recipients of messages. If a response is not received from a recipient prior to the specified date, the system generates a warning message to the sender.