System and method for spam prevention with generalized email address

摘要

A method for using a unique identifier in the email address format (generalized email address) to prevent spam email from reaching an email system is described. According to one embodiment of the invention, a method for sending and receiving emails in the email system is provided. The method includes using any valid regular email address to send an email to a group of recipients by a sender of the system. If recipient's email address is not in the system, the recipient receives a request email via regular email service for joining the system. After joining the system, the recipient needs to make a contact connection with the sender for retrieving the email by using generalized email address. The spam email cannot reach the system that based on generalized email address.

主权项

1. A computers-implemented method using an email system based on unique identifier in email address format (generalized email address) for preventing spam email from reaching the email system, comprising:
receiving an email having zero or a plurality of attachment files from a sender of the email system to a plurality of recipient email addresses by a controller; saving the email with a unique email id to a database in the email system for later retrieval; searching each recipient email address as generalized email address in a generalized email address table in the database to create a search result; determining each recipient email address as an external recipient email address for the recipient email address not in the email system or an internal recipient email address for the recipient email address in the email system based on the search result; sending a regular email of join system request to each external recipient email address through regular email service; determining a contact connection with the sender for each recipient of the internal recipient email address; issuing the contact connection request to each internal recipient email address if the recipient of the internal recipient email address has no contact connection with the sender; allowing the recipient in the email system to establish contact connection with the sender if the recipient has no contact connection with the sender; letting each recipient in the email system to retrieve the email if the recipient has the contact connection with the sender.