Papercut - build on .NET using WPF. Ever need to test emails from an application, but don't necessarily want it sending them out? Don't want to hassle with pointing it to a physical SMTP server? All you want to is verify it can send email, and take a look at the message. Papercut is the answer. Papercut is a simplified SMTP server designed to only... More information

Blat is a small, efficent SMTP command-line interface (CLI) mailer for Windows. It is the SMTP *sending* part of an eMail User Agent (MUA) or eMail client. As such, Blat sends eMail via SMTP (or internet eMail) from the command line. Combine with Windows integrated command-line program `at` to schedule sending emails or posting later. [Philosophy... More information

Windows 7/Vista/XP/2003/2010 compatible dummy SMTP server. Sits in the system tray and does not deliver the received messages. The received messages can be quickly viewed, saved and the source/structure inspected. Useful for testing/debugging software that generates email.

Claws Mail is a GTK+ based, lightweight, and fast e-mail client and newsreader. Supports POP3, APOP, IMAP, SMTP, SMTP AUTH, NNTP, LDAP, multiple accounts, spell-checking, addressbook, SSL, GPG, filtering, i18n, & more. It is further extended by plugins. #### Documentation * [Features](http://www.claws-mail.org/features.php) * [Screenshots](http://... More information

hMailServer is a free, open source, e-mail server for Microsoft Windows. It's used by Internet service providers, companies, governments, schools and enthusiasts in all parts of the world. It supports the common e-mail protocols (IMAP, SMTP and POP3) and can easily be integrated with many existing web mail systems. It has flexible score-based spam... More information

Pode is a Cross-Platform PowerShell framework for creating web servers to host REST APIs and Websites. Pode also has support for being used in Azure Functions and AWS Lambda. ### Features * Cross-platform using PowerShell Core (with support for PS5) * Docker support, including images for ARM/Raspberry Pi * Azure Functions and AWS Lambda support *... More information

The MDaemon Messaging Server is trusted by customers in over 90 countries around the world to meet the needs of their small- to medium-sized businesses. MDaemon is a reliable and secure mail server that does not require expensive administration or impose high per-user costs. It simplifies messaging and collaboration requirements with an intuitive, ... More information

Sylpheed is a simple, lightweight but featureful, and easy-to-use e-mail client. Sylpheed provides intuitive user-interface. Sylpheed is also designed for keyboard-oriented operation, so Sylpheed can be widely used from beginners to power users. Sylpheed runs on many systems such as Windows, Linux, BSD, Mac OS X and other Unix-like systems. Sylphee... More information

In the default mode, it transmits a mail to an SMTP server (for example at a free mail provider) which takes care of further delivery. To use this program with your mail user agent (MUA), create a configuration file with your mail account(s) and tell your MUA to call msmtp instead of /usr/sbin/sendmail. Features include: * Sendmail compatibl... More information

___ [choco://rdpguard](choco://rdpguard) To use choco:// protocol URLs, install [(unofficial) choco:// Protocol support ](https://chocolatey.org/packages/choco-protocol-support) ___  ###What is RdpGuard and How does it Work? RdpGuard is a host-based intrusion prevention ... More information

Sylpheed is a simple, lightweight but featureful, and easy-to-use e-mail client. Sylpheed provides intuitive user-interface. Sylpheed is also designed for keyboard-oriented operation, so Sylpheed can be widely used from beginners to power users. Sylpheed runs on many systems such as Windows, Linux, BSD, Mac OS X and other Unix-like systems. Sylphee... More information

SecurityGateway for Email Servers offers simple and easy-to-use features to analyze, manage, and report on the inbound and outbound email traffic patterns of Microsoft Exchange Server or any other SMTP email server. SecurityGateway incorporates multiple defense layers that deliver comprehensive protection at the edge of your network to prevent spam... More information

3Proxy tiny free proxy server is really tiny cross-platform (Win32/Win64/Unix) freeware proxy servers set. It includes HTTP proxy with HTTPS and FTP support, SOCKSv4/SOCKSv4.5/SOCKSv5 proxy (socks/socks.exe), POP3 proxy, SMTP proxy, AIM/ICQ proxy (icqpr/icqpr.exe), MSN messenger / Live messenger proxy (msnpr/msnpr.exe), FTP proxy, caching DNS proxy... More information

*mailsend* is a simple command line program to send mail via http://www.ietf.org/rfc/rfc0821.txt?number=821[SMTP] protocol. Long time ago, I needed to send a piece of alert mail from a program in a networked Windows machine, but could not find a simple program like this installed. So I wrote one. You might find it useful as well. The program does n... More information

SniffPass is small password monitoring software that listens to your network, capture the passwords that pass through your network adapter, and display them on the screen instantly. SniffPass can capture the passwords of the following Protocols: POP3, IMAP4, SMTP, FTP, and HTTP (basic authentication passwords). You can use this utility to recover... More information

SniffPass is small password monitoring software that listens to your network, capture the passwords that pass through your network adapter, and display them on the screen instantly. SniffPass can capture the passwords of the following Protocols: POP3, IMAP4, SMTP, FTP, and HTTP (basic authentication passwords). You can use this utility to recover... More information

SniffPass is small password monitoring software that listens to your network, capture the passwords that pass through your network adapter, and display them on the screen instantly. SniffPass can capture the passwords of the following Protocols: POP3, IMAP4, SMTP, FTP, and HTTP (basic authentication passwords). You can use this utility to recover... More information

The ProtonMail Bridge is an application for paid users that runs on your computer in the background and seamlessly encrypts and decrypts your mail as it enters and leaves your computer. It allows for full integration of your ProtonMail account with any program that supports IMAP and SMTP such as Microsoft Outlook, Mozilla Thunderbird and Apple Mail... More information

___ ###[choco://hexamail-pop3-downloader](choco://hexamail-pop3-downloader) To use choco:// protocol URLs, install [(unofficial) choco:// Protocol support ](https://chocolatey.org/packages/choco-protocol-support) ___  Automatically collec... More information

Ever wanted to get rid of Outlook ? DavMail is a POP/IMAP/SMTP/Caldav/Carddav/LDAP exchange gateway allowing users to use any mail/calendar client (e.g. Thunderbird with Lightning or Apple iCal) with an Exchange server, even from the internet or behind a firewall through Outlook Web Access. DavMail now includes an LDAP gateway to Exchange global ad... More information