System and method for spam prevention with generalized email address

An email system based on unique identifier in email address format (generalized email address) for preventing spam email from reaching the email system, comprising:

• creating means for creating an email having zero or a plurality of attachment files by a sender of the email system to a plurality of recipient email addresses;
• generalizing means for generalizing both the sender email address and the plurality of recipient email addresses to generalized email addresses by removing the original meaning of local part and domain part from every email address;
• bypassing means for bypassing regular email gateways, regular email servers, and Simple Mail Transfer Protocol (SMTP) to send the email having zero or a plurality of attachment files to a controller;
• saving means for saving the email having zero or a plurality of attachment files with a unique email id to a database in the email system for later retrieval;
• searching means for searching each recipient generalized email address in a generalized email address table in the database to create a search result;
• determining generalized email address means for determining each recipient generalized email address as an external recipient generalized email address for the recipient generalized email address not in the email system or an internal recipient generalized email address for the recipient generalized email address in the email system based on the search result;
• restoring means for restoring the sender generalized email address and each external recipient generalized email address to regular email address by adding the original meaning of local part and domain part;
• sending means for sending a regular email of join system request to each external recipient regular email address through the regular email service;
• verifying contact connection means for verifying a contact connection with the sender for each recipient of the internal recipient generalized email addresses;
• issuing means for issuing the contact connection request to each internal recipient generalized email address if the recipient of the internal recipient generalized email address has no contact connection with the sender;
• allowing means for allowing each recipient in the email system to establish contact connection with the sender if the recipient has no contact connection with the sender;
• forwarding means for forwarding a notification of the email having zero or a plurality of attachment files to each internal recipient generalized email address if the recipient of the internal recipient generalized email address has the contact connection with the sender;
• omitting means for omitting regular email gateways, regular email servers, Post Office Protocol 3 (POP3), and Internet Message Access Protocol (IMAP) to let each recipient of the internal recipient generalized email addresses retrieve the email having zero or a plurality of attachment files with the unique email id directly from the controller if the recipient has the contact connection with the sender.