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Vaza-Mail Server is open source mail server which provides SMTP and POP3 server implemented in 100% Pure Java. It is a pure Java Implementation using J2EE.
Postak is Java web based mail client. Main purpose is to provide access to POP3 and IMAP mail services and also to provide functionality for sending e-mail via SMTP protocol.
The goal of this project is to develop a very simple SMTP server that responds to SMTP requests and makes received messages available for query at a later time. All useful features for a SMTP server that can be used in an automated testing suite.
Zoe is a web based e-mail client with a built in SMTP server and Google-like search functionality that lives on your desktop. Zoe is written in java and uses Lucene technology to provided instant searching and threading of your e-mails.
MailFetcher is program that retrieves mail though POP3 and then resends it with SMTP for a set of users.
It is written in Java. It is equivalent to fetchmail, the well-known *nix utility but with less functionality, of course.
A user-centric Java Mailet for the Apache James mail server (a Java mail server) for the purpose of filtering spam using a naive Bayesian algorithm. As a Mailet, the filter can act upon spam as it is received over SMTP before the user gets it.
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Quick Mail Project is Mail Server with Web mail. The project is independed platform support designed Using Java ,C, PHP ,MySQL database . Its support RFC SMTP protocol , RFC Internet Message, Multi domains, forward, block, spam bulk and a lot more.
The eMATgine server is: a multi-protocol server with http,ftp,wap,SMTP,POP3 connection; a multi-terminal server: users can use an ie, a wap phone. This server is a full multi-threaded JAVA server using HSQLDB database.
SAfE is a java & perl based email client program that provides basic features for your email needs. This program does not use POP3/SMTP to download hotmail messages to the local storage or to send them; only internet connection is required.
Pelgrine Bulk Email Engine is a multithreaded bulk email engine with database and flatfile access features. PBEE has a built in template parser, and supports unlimited SMTP servers in a round robin, load balanicing fashion. 100% PureJava.
TarProxy is a Statistically-Driven SMTP Tarpit. TarProxy calculates the probability that an incoming mail is spam, and uses that information to control a variable-viscosity tarpit for each connection.
MailPing monitors SMTP mail hubs and relays from a user's point
of view by sending SMTP messages to the servers that it monitors, looking for
the messages to come back (and notifies if they don't), and calculates
round trip times.
MailRunner is a Java/Swing based email response management testing tool. It automates the sending of email to any SMTP server which can then be used to test the routing and processing of emails. All email are defined in an XML script.
JEM is an SMTP server with pluggable components that let you
process email in any way you like. It can also extend beyond
emails into generalised message processing (like JMS) and can
even generate its own messages based on a Cron-like facility.