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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.
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The project aims at developing J2EE Connector Architecture 1.0 Compilant Resource Adapters for integrating various EIS's like XML files, XML DB, LDAP, FTP, SMTP, POP3, Point Of Sale, Properties File, Office Documents
GimeNet is a GPL set of packages that lets you use the most popular protocols (HTTP/1.1, POP3, SMTP, IRC) from your Java applications.
GimeNet es un conjunto de paquetes GPL cuya finalidad es poder usar los protocolos más populares desde Java
A framework for Java Remote Method Invocation (RMI) with plugin architecture for both protocol implementation (XMLRPC, etc) and network transport (HTTP, SMTP, etc.)
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.
Welcome to the project page of the Open JMail Server - a scalable Java email server. Features POP, SMTP, IMAP, dynamic pluggable storage design, modular protocol handling, easy XML configuration and much more.
Ichabod is an SMTP/POP3 server, with mailing list support. Administration is via a web, or email
You can also use Ichabod to make your app receive email as an SMTP server.
You can also easily extend it by subclassing to add your own behaviors.
Jandy is an internet development framework based on Indy, designed to make writing web clients and servers easier. Currently only the HTTP client and HTTP server frameworks are working, but other protocols will be included, like FTP, POP3, SMTP, etc.