Free pop3 software for linux

BixData is a system monitoring tool. BixData monitors services (HTTP, ping, POP3, SMTP), performance, and processes. You can create critical notifications and get email alerts for HTTP, ping, CPU, memory, and even SMART diagnostics.
A graphical console for Linux and Windows supports real-time dynamic graphs. The runtime clients and server component are lightweight and easy to set up, and run on Linux and Windows.
Main features:
- Supports Linux and Windows
- Server monitoring, Email Notifications
- HTTP, ping, POP3, SMTP
- CPU Load
- Memory Usage
- Disk Performance
- SMART Hard Disk Drive Information
- Network Statistics
- Process Statistics
- Windows Performance Counters
- Real-Time Graphs
- System Information
- Configure Startup Services
- WMI
- Low Bandwith Usage
- Secure
Enhancements:
- This release adds MySQL database monitoring.
- It also supports adding your own custom scripts for monitoring and creating new reporting templates.
- There are minor desktop UI improvements.
- Important fixes and enhancements are included to improve stability in Agent and Server on Linux, Mac OS X, FreeBSD, and Windows.

pop3.proxy is a POP3 e-mail proxy. Recently I added spam and virus scanning. It also supports (on Linux platforms) transparent redirection.
Enhancements:
- Added clamav version to e-mail header.

Perl Pop3 is a POP3 server fully implemented in Perl.
The advantages over other POP3 servers are that it is not a memory hog, and can be used to connect to databases for authentication.
Also, its code is easy to extend for any other uses, like POP-before-SMTP and extended logging.
Main features:
- Does not read the mailbox into memory, it reads what it needs as it processes the mailbox, so its memory requirements are low.
- Most email delivery is just printing out to the client; this is done in a fast and efficient way.
- It uses the systems users in the default unix way, but it can be changed to read users off a database (using DBI/DBD). It is prepared to use the database right away and can be extended or configured to use existing systems.
- It can be use to solve the smtp authentication via popauth or relay-domains (with sendmail) so users can be permitted to send smtp mail after pop3 authentication. This has been an effective solution for roaming users.
- Logging can be extended beyond the use of text files to any other method available in Perl, including database systems.
- Also, security is not an issue, as input is strictly controlled.
Using an easily modifiable daemon as part of a e-mail solution can be of great advantage over other existing systems in other languages. Further development will also try to incorporate more easily configurable extensions and plugins, so rapid deployment and extensibility is achieved.
Installation:
For installation instructions and configuration please see the INSTALL file. For more detailed information, consult the DOC file.

POP3 Virus Scanner Proxy is a full-transparent proxy daemon which scans all mails for viruses using third party scanners (built-in support for AVPD and Trophie).

You have to set up a port redirection in the linux-netfilter (iptables) so that all connections from e.g. inside your office to any POP3 server outside in the world will not leave your router, but come a local port, on which POP3VScan listens. POP3VScan receives from the linux kernel the original destinations of packets (the POP3 server outside in the world) and will connect to them.

All data we receive from the client will be sent to the server, and vice versa. With a little enhancement: we parse the neccessary parts of the POP3 protocol and when an email is sent from the server, we store it into a file, invoke a virusscanner and send it if it is good, or we just replace it with a virus notification. It should be possible to use all scanners using the scannertype=basic. Also POP3VScan provides scannertype=avpd for high-speed scanning using Kaspersky Anti-Virus for Linux, every C programmer can easily adept other scan-daemons (trophie, sophie, antivir, ...).

Neither the client nor the server has to be configured, none of them will take notice that theres a mailscanner (except the client when he gets a virus notification or if he looks into the header, and the server gets our ip as source).

GNUsTicker is a GNOME panel applet RSS aggregator like KNewsTicker for KDE.

It may be extended for feeding from differente sources (an example for POP3 mail server is provided).

wmMultiPop3 is a WindowMaker dockapp, written by me, Daniel Sundberg, which checks one or more pop3-accounts for new mail.

Its based on wmPop3, written by Scott Helden. Ive added support for multiple pop3 accounts (a few while-loops and some changes in the config-file parsing routines).

Yet Another Mail Manager (YAMM) is a Java email client. This application has support for MIME, POP3, SMTP, HTML, filters, multiple mail accounts on different servers, and file attachments.
Main features:
- POP3 support
- Smtp support
- html support
- file attachment support
- Internationalization
- Multiple mail accounts