Simple Mail Delivery Protocol - Recipient-Based Email Delivery with Anti-spam Support

In this paper we propose a user based architecture for the email system, where the recipient of an email message manage its receipt in conjunction with both origin and destination email servers. Messages are kept to the origin email server until a confirmation from the recipient is issued though the destination email server. Therefore, spam email doesn’t travel the Internet and doesn’t overload the destination email server and recipient's mailbox. White and black lists for (sender, email_server) pairs are built automatically following user evaluation. With our proposal, full control is delegated to the recipient over the email activity. On the server side, Simple Mail Delivery Protocol (SMDP) manages email delivery and options. SMDP server acts as a gateway for sending emails, a repository for the users' mailboxes and a central point for managing user options related to email filtering and spam handling. The solution is suitable for group/business email handling.