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userb emails usera - usera does not have userb on their whitelist.
Userb's email is not delivered, instead userb gets a mail asking if they wish to appear on usera's list? if yes usera gets asked same thing if yes all old/new mails get delivered
Jsmtpd : A small and modular smtp email server daemon, written in Java. Jsmtpd is heavily based on plugins, and supports : spam detection (Spamassassin, Jasen, RBL servers, BlackList), anti virus (Clam Antivirus), and many others filters.
Penny Post is a system to combat spam emails by making the sender "pay for email" by spending a few seconds of computing time. Outgoing mail is marked with postage stamps that convince the receiver that the sender is genuine.
The MailRA resource adapter allows sending and asynchronously (non-polling) receiving of emails. It is coded according to the JCA 1.5 and Java EE 5 standards. The project is coded from scratch, without using source code from Sun.
FireBall is a webmail system improved by adding support for two additional channels of communication (besides e-mail): SMS(MMS) messaging and Usenet. Additionally it is going to provide a set of supporting tools making message handling easy and enjoyable
Email client & server with clustering support. Program focuses on data processing and management – the archiving, sending, receiving and encryption of e-mail messages with the related management of accounts. Functionality divided into server and client
Apache James Mail Server hook for the famous Liferay Enterprise Portal. Uses James as mail server backend rather than Postfix/QMail/Sendmail. Easy to configure if you have production mail server(MTA) based on James.
Ovoron's Legacy is a fantasy Play-By-E-Mail game that runs on the PBEM Engine. Each player command an empire of fantasy creatures, interacts with other players, and must seek to conquer the world.
Online Virtual Drive is proxy to different sources like mail accounts, online briefcase, online storage drive. Its WebDAV based drive that supports storing and retrieving the files.
Securing mails without involving user. Secures them as often as possible if it is possible. Shows security-state and process of mails and mail-partners.
DevWare is an Developer Groupware,with Calender, E-Mail, Chat, Todo's, integrated CVS / SVN, own Version Control, Documentation System, Redactionell System. It's written in Java, the Server runs on Jboss, Rich Client is Eclipse.
My MailSystem is a complete email solution that will include an SMTP and POP3 server and a graphical email client. The system will be implemented completely in Java.
News Mail Application, based on FCKEditor. Supports personalization of newsletter mails based on a data source. Allowes scheduling of transmission. Web based interface.
Virtual Qmail - virtual domains management system for qmail. It is designed to be fast, reliable, and easy to use. Includes software allowing users to manage their accounts via WWW.
MrPostman is an email gateway from local POP clients like Microsoft Outlook, Mozilla's mail client etc. to different web mail services like Yahoo and Hotmail.
It is being designed for extensibility so is easy to add more web mail services to it.
(Sorry folks, this is an old out-dated project, please do not use.) This provides a way to process emails and invoke your own custom actions. Written in Java. Comes with bounce handlers to process bounced mail, reads from disk or POP (or custom).
RMDS, the Reisinger Mail Delivery System is a MTA Solution entirely written in Java.
SMTP/SMTP-Rleay/POP/IMAP Services are supported.
RMDS makes use of a solid rdbms based mailstorage technique.
Administration capabilities are wide spread.
LightningPigeon is an e-mail client designed to be efficient and non-bloated. The primary aim being of an educational value to the developers and the secondary aim of providing a client which works at top efficiency.