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Passenger is a powerfull and secure POP/IMAP proxy(gateway) server. It come with many plugins to adapt to your infrastructure (scalability, loadbalancing, secure with SSL, ldap or rdbm based, front-end abstraction of your infrascture).
SMTPSpy Proxy is a "dumb" SMTP proxy that waits for inbound SMTP requests and forwards all them directly to an external SMTP server, while outputting all e-mails passing through to a specified disk location, for monitoring purposes.
FakeSMTPServer is a solution for testing web-based products that require a "unique" email address. Instead of being a "real" smtp server, this server forwards all email to a single email address, or can output them to the console instead.
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Quinsonnas Mail, a PHP4+/PEAR Web email client, retrieves mail from POP, IMAP, and NNTP server inboxes into a MySQL database. Mail is sent via SMTP, Sendmail, or PHP. MIME emails are supported as well. Contacts and lists are stored for composing email.
A suite of perl scripts used to build, maintain, and update a complete emailserver. Includes support for POP3(SSL), IMAP(SSL), SMTP, SMTP-AUTH, POP before SMTP, Webmail, Admin Interfaces, centralized configuration files, and automated mailbox cleanup.
A security-oriented emailserver that implements SMTP, POP, IMAP, and HTTP (Webmail).
The goal is to have multiple independent components that use the same mailbox format, authentication database, and filesystem layout.
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.
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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.
A little Java-Server-Software (like a SMTP-proxy), which accepts incoming SMTP-Messages. The subject will be parsed for @ or + symbols, which should control time shifted sending. If not contained, the message will be forwarded to parent smtp.
An advanced qmail distribution based on qmail-sql which has SMTP, SMTPS, POP3, POP3S, IMAP, IMAPS services, a content scanner, spoofing protections, SMTP AUTH support, SMTP-after-POP/IMAP, PHP5 API, SPF support and much more...
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.
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.
Modular EMailServer with features to support SMTP-after-POP,Anti-Virus filter by using popular AV-Scanners,IMAP,POP3,SSL,ODMR,SASL and has an easy configuration.
(SMTP,ODMR,IMAP,POP3,SASL,CHUNKING,BINARYMIME,PAM)
An email client written in Java, C, and C++ which not only allows standard pop/smpt/imap access, but also integrated access to Yahoo!, Hotmail, Lycos, and many others. This is all done without any additional services (such as pop forwarding).
Linux-based MTA & POP/IMAP server written in JAVA, that does NOT use Linux accounts. Instead, it uses SQL database to perform most operations and transactions. Goals: SIMPLE configuration, ready-to-go out-of-the-box.
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.
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.
SmtpUnit is a smtpserver written in java to be used for unit testing java code within a enterprise level or stand alone java application to test code that results in an email being sent.