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Browse free open source POP3 software and projects below. Use the toggles on the left to filter open source POP3 software by OS, license, language, programming language, and project status.

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    Email and SMS Marketing Software

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    Acronis Backup Protection

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  • 1
    OpenPop.NET

    OpenPop.NET

    Robust open source POP3 client and MIME parser written in C#

    .NET library written in C# with a full implementation of a POP3 client. Easy to use but yet powerful. Includes a robust MIME parser backed by several hundred test cases. The easiest way to install OpenPop.NET is via NuGet. In Visual Studio's Package Manager Console, simply enter the following command: Install-Package OpenPop.NET Our homepage (http://hpop.sourceforge.net/) includes examples, documentation and a general introduction for email. For more information, visit our project homepage. Code is hosted on GitHub (https://github.com/foens/hpop).
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    Downloads: 1,963 This Week
    Last Update:
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  • 2
    SwithMail
    Send SMTP email silently from command line (CLI), or a batch file using Exchange, Gmail, Hotmail, or Yahoo! Plus. Supports XML settings files, variables, or all settings explicitly from the command line. Now supporting Exit Codes for batch file use (will return "0" for successful delivery, or "1" for error delivering) - handle your batch file accordingly.
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    Downloads: 95 This Week
    Last Update:
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  • 3
    Fetchmail - the mail-retrieval daemon

    Fetchmail - the mail-retrieval daemon

    Client daemon to move mail from POP and IMAP to your local computer

    Fetchmail is a mail retrieval daemon that can download messages from POP3, IMAP, ODMR and ETRN-based stores, with SSL/TLS security including certificate verification, and pass downloaded mail to a local SMTP or LMTP server, or a message delivery agent such as maildrop.
    Leader badge
    Downloads: 152 This Week
    Last Update:
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  • 4

    HERMES Mail

    The cult-favourite eMail client formerly known as Qualcomm Eudora

    eMail traffic is on the rise. With over 100 man-years of development time behind it and a clean, intuitive interface that makes handling messages a breeze, Hermes Messenger (formerly known as QUALCOMM Eudora) is more than a way to send and receive mail: it's a powerful management tool with features to increase your productivity and enhance your communications. It is the best eMail program for people who get lots of it. If you're not yet one of them, you soon will be. Take control of your eMail before it takes control of you! Hermes provides industrial-strength communication, free of ads and free of cost.
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    Downloads: 32 This Week
    Last Update:
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    Let your volunteer coordinators do their best work.

    For non-profit organizations requiring a software solution to keep track of volunteers

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  • 5
    IndiMail
    Highly scalable/configurable Messaging Platform allowing users in a domain to be distributed on multiple hosts, has multiple queues. Provides virtual domains/users in MySQL. Modern MSP class qmail replacement with ESMTP, POP3/IMAP, QMTP, QMQP support
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    Downloads: 12 This Week
    Last Update:
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  • 6
    PopTray is a mail notifier written in Delphi for the Windows platform. It sits in your tray notification area and check mail from multiple accounts on a timer interval. Preview, Delete, Rules, Plug-ins and translated into more than 30 languages.
    Downloads: 18 This Week
    Last Update:
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  • 7
    YPOPs! is an application which emulates a POP3/SMTP mail server and provides free POP3 and SMTP access to Yahoo! Mail. It does not depend on Yahoo's POP3/SMTP mail server. You can use a mail client of your choice!
    Downloads: 3 This Week
    Last Update:
    See Project
  • 8
    Mailcheck is a simple, command line, configurable tool that allows multiple mailboxes to be checked for the existence of new mail messages. It supports both mbox and maildir-style mailboxes. It also supports remote POP3 and IMAP mailboxes.
    Downloads: 14 This Week
    Last Update:
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  • 9
    pop3spam is a POP3 client which connects to a POP3 server and deletes unsolicited mail in-place. It's possible to check for messages that exceed a certain limit and to scan header lines for special patterns (regular expressions).
    Downloads: 11 This Week
    Last Update:
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  • 10
    FreePOPs is a webmail to pop3 conversion daemon. It is extensible to support other webmail using the scripting language LUA. See the homepage for supported webmails.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 11
    Heirloom mailx (formerly known as "nail") is intended provide the functionality of the POSIX mailx command with additional support for MIME messages, IMAP (including caching), POP3, SMTP, S/MIME, message threading/sorting, scoring, and filtering.
    Downloads: 5 This Week
    Last Update:
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  • 12
    Java SMTP/POP EMail Server
    Provide an Open Source Java Email Server that supports POP3/SMTP.
    Downloads: 5 This Week
    Last Update:
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  • 13
    Allow accessing to your exchange account with any email client to get and send emails with POP3 and SMTP protocols. It's a proxy between a Exchange and the e-mail client using the Outlook Web Access features.
    Downloads: 3 This Week
    Last Update:
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  • 14
    Convert Webmail to POP3.Is also included a SMTP/POP3 tunneling system that allow send and receive email in a private network HTTP PROXY based. All connection are plugin based. Over 450 email server supported and tested, GMAIL POP3/SMTP over Proxy Network.
    Downloads: 1 This Week
    Last Update:
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  • 15
    A virus scanner for VPOP3 - a Windows mail server which includes a hook for an 'external router' which processes mail before it is delivered to a user's mailbox. We currently support the free AVG from Grisoft and eTrust EZ Antivirus.
    Downloads: 4 This Week
    Last Update:
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  • 16
    P3Scan is a fully transparent scanning proxy-server for email clients. It provides scanning of incoming/outgoing email messages for Virus''s, Worms, Trojans, Spam, and harmfull attachments. It can also parse messages for web-bugs.
    Downloads: 3 This Week
    Last Update:
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  • 17
    can send mails without a mail account. preview and manage up to 20 pop3-mailboxes, view only mail headers first. Mail adress scanner to find mailadresses in files. can send mails by using Remailers. Has a Header-Editor.
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    Downloads: 3 This Week
    Last Update:
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  • 18
    C# Email Server (CES). Implements SMTP and POP3 components that can be used as a standalone server or as components in other applications.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 19
    PyWebMail is a Python library and POP3 gateway that enable working with WebMail servers like with POP3 or IMAP mail server. Currently Mail.Com, Yahoo! Mail, Gmail, Netscape.Net, HotMail and some minor servers support is finished.
    Downloads: 2 This Week
    Last Update:
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  • 20
    Recepção NFE é uma solução de código-fonte em C# 3.5 aberto desenvolvido para atender parcialmente ( XML ) uma obrigação dos contribuintes de terem que enviar a Nota Fiscal Eletrônica para o cliente através de qualquer meio magnético.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 21
    Free java email smtp pop3 implementation, primarily for use as a development tool
    Downloads: 1 This Week
    Last Update:
    See Project
  • 22
    Active Spam Killer for Windows (AfW) is a challenge/response spam filtering system for the Windows platform. Based on ASK for Linux by Marco Paganini, this project adds a POP3 client/server wrapper and web administration, as well as Windows compatibility
    Downloads: 1 This Week
    Last Update:
    See Project
  • 23
    Set of pure useful Java utilities taking care of common tasks and avoiding re-write of code
    Downloads: 1 This Week
    Last Update:
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  • 24
    Two Perl scripts for deleting of selected messages left on the POP3 server. You can select messages for deleting from within your mail client missing this feature, like KMail and Evolution, then execute the script which actually deletes messages. This project is discontinued. I still see occasional downloads, so I will leave it as-is.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 25
    SMTPUTF8 is email programs that can support internationlized email addresses in UTF-8. SMTPUTF8 permits the use of email addresses that include non-ASCII characters such as Chinese, Japanese, and Korean (CJK).
    Downloads: 1 This Week
    Last Update:
    See Project
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Open Source POP3 Software Guide

Open source POP3 software is a freely available technology that allows users to access their email accounts from any computer connected to the internet. It stands for Post Office Protocol version 3 and basically allows emails to be stored on a remote server, as opposed to being held locally on the user's computer. This type of software is often used by small businesses, who don't want to invest in expensive email server hardware and software just for a few employees.

Using open source POP3 software, users are able to connect with an external mail server and download their emails onto local machines. They can then view those emails offline at any time. The protocol also enables users to delete messages from the remote mail server once downloaded so they don't take up storage space there anymore.

This type of software tends to be more secure than standard webmail options as it uses encryption protocols such as SSL/TLS or STARTTLS. With these security measures in place, emails sent back and forth between user and server are kept secure - meaning that passwords or other sensitive data cannot be intercepted or stolen easily by third parties.

Overall, open source POP3 software provides a convenient way for businesses to manage their email without having to purchase pricey enterprise-grade solutions - while still maintaining security over communications between user and server. It is extremely useful if you need your office staff members (or even yourself) to be able access their emails anywhere there is an internet connection available.

Open Source POP3 Software Features

  • SSL/TLS Support: Many open-source POP3 software packages offer support for Secure Socket Layer (SSL)/Transport Layer Security (TLS) protocols, which allow for secure communication between two systems. This ensures that all information sent and received is encrypted, preventing unauthorized third parties from snooping or manipulating the data.
  • Easy Configuration: Open-source POP3 software is often designed with an easy-to-use interface for creating and managing user accounts and settings. This makes it simple to configure the program to meet any organization's needs, even if they are not tech savvy.
  • Robust Email Management: Open-source POP3 software provides a variety of options for managing emails, including filtering out spam, managing mailing lists, and organizing emails into folders for easy access later on. It can also be used to automatically forward messages to different addresses or delete them after a certain period of time.
  • Customization Options: Many open-source programs come with a range of customization options such as customizing the login page, adding logos or other graphics to emails, and implementing user access control systems. This allows organizations to tailor their email management system according to their specific requirements.
  • Webmail Interface: Some open-source programs provide users with a webmail interface which allows them to access their inboxes through a web browser without having to install any additional applications on their computer. This can be especially useful if you need quick remote access to your email account when traveling or away from home.

Different Types of Open Source POP3 Software

  • POP3 Server Software: These are server-side programs used to receive and store emails on a central mail server. They allow clients to download emails through the Post Office Protocol (POP3).
  • Webmail Clients: These applications provide web-based access to email accounts, with features such as message composition, address book management, folder organization, and support for multiple protocols such as IMAP, SMTP and Secure POP3.
  • Console-Based Clients: These are command line tools that enable users to send or receive emails from a remote computer over the Internet.
  • Graphical User Interface (GUI) Clients: GUI clients offer a graphical interface for managing messages, allowing users to view their inboxes in an organized fashion with easier navigation than what is available in console-based software. Additionally, many of these offer extra features like spell checking and address book sharing.
  • Notifiers: Notifiers run in the background and alert users when they have received new email. Some notifiers can even check multiple mail accounts simultaneously and display all of them in one window.
  • Security Tools: Security tools often come as part of POP3 software packages, providing protection against unwanted spam or malicious emails by filtering out potentially dangerous content before it reaches the user's inbox.

Advantages of Open Source POP3 Software

  1. Cost Effective: Open source POP3 software is free to use and generally requires no licensing fees or other costs, making it a highly cost-effective choice for businesses looking to save money.
  2. Flexibility: Open source POP3 software offers great flexibility when it comes to configuring your email server and connecting users with their emails. You can easily customize the settings and features of the program to suit your needs, allowing you to get the most out of your email server.
  3. Reliability: Because open source POP3 software is continually being updated and improved by developers, it often provides a more reliable service than proprietary alternatives. This means fewer problems for you in the future, as well as greater confidence in the security of your system.
  4. Compatibility: Open source POP3 software is typically compatible with a wide variety of systems and platforms, making it easy to integrate into existing environments without having to purchase expensive new hardware or additional software packages.
  5. Scalability: As businesses grow, so does their need for an efficient email system that can scale up with them. With open source POP3 software, you can easily upgrade your system’s capacity when necessary without having to purchase a costly proprietary solution.
  6. Security & Privacy:Open source POP3 software provides excellent security measures that protect both users' data and privacy. It also helps ensure compliance with various regulations such as GDPR in order to keep user data safe from hackers and malicious actors on the web.

Types of Users That Use Open Source POP3 Software

  • Small Business Owners: These individuals and entities may use open source POP3 software to manage their business email accounts, as it is often free and doesn't require extensive technical knowledge or resources.
  • Home Users: Home users can benefit from the flexibility of open source POP3 software as they can configure their own email accounts without needing to pay for a subscription-based service.
  • Technology Enthusiasts: Tech-savvy users who are comfortable with command line tools may appreciate the control that comes with using open source POP3 software.
  • Webmasters and Developers: Webmasters and developers use open source POP3 software for creating customized mailing solutions for their projects, which can be more efficient and reliable than third-party services.
  • Nonprofits: Nonprofits or other organizations on a budget may find that an open source solution is more cost effective than commercial alternatives, while still providing them with adequate security measures.

How Much Does Open Source POP3 Software Cost?

  • Open source POP3 software is available for free, so it does not cost anything. POP3, which stands for Post Office Protocol Version 3, is a protocol used to transfer emails from an email server to a user's computer or mobile device. By using open source POP3 software, users can send and receive email messages without the need for expensive proprietary solutions.
  • Open source POP3 software comes in many different forms and is developed by a variety of organizations and individuals around the world. Some of the more popular open source solutions include Courier Mail Server, GNU Mailutils, OpenPOPs, and GSmail. These solutions differ in terms of features and options but all provide secure data transfer capabilities with minimal setup requirements.
  • When using open source POP3 software, users may require additional services such as antivirus protection or spam filtering that are typically found in commercial email products. However, these services can be added on top of the existing open source solution without requiring any out-of-pocket expenses. Additionally, since open source programs are readily available for download on the internet, there is no need to purchase physical media like CDs or DVDs to deploy them onto servers or personal computers/mobile devices.
  • Overall, open source POP3 software can provide users with reliable email transmission capabilities at no cost whatsoever. This makes it a great choice for those looking to save money while still enjoying basic email functionality across their entire network/organization.

What Software Does Open Source POP3 Software Integrate With?

Open source POP3 software is compatible with a variety of software types, ranging from collaboration and communication tools to file sharing applications. Examples of software that can integrate with open source POP3 include email clients such as Mozilla Thunderbird and Microsoft Outlook, task management systems such as Asana or Trello, chat applications like Slack or Discord, project management tools like JIRA or Redmine, calendar programs like Google Calendar or Apple Calendar, file sync services such as Dropbox or Google Drive, cloud storage solutions like Amazon S3 or OneDrive, and even web hosting platforms such as Apache or Nginx. By connecting these different pieces of software together via POP3 integration, users have access to powerful features that enable them to better collaborate and communicate with their team.

What Are the Trends Relating to Open Source POP3 Software?

  1. Increased Flexibility: Open source POP3 software allows for greater flexibility than traditional software packages, allowing for customizations to better fit a user's individual needs.
  2. Improved Security: Open source POP3 software benefits from the collective effort of many developers, which can help to reduce security vulnerabilities.
  3. Cost-effective: It is free to use open source POP3 software, which makes it more cost-effective when compared to alternative solutions.
  4. Continuous Updates: Open source projects are often updated regularly and receive frequent bug fixes and new features. This helps minimize bugs and improve the software's overall performance.
  5. Collaboration: By using open source POP3 software, users can collaborate with other developers who may be able to provide assistance in debugging or adding features to the program. This collaborative process allows for rapid development of the program.
  6. Scalability: Open source POP3 software is designed to be scalable, allowing it to be used in large organizations with multiple users.
  7. Simplicity: Many open source POP3 programs are designed with a simple user interface, making them easy to use for even novice users.

How Users Can Get Started With Open Source POP3 Software

Getting started with open source POP3 software is easy and can be done in a few simple steps.

  1. The first step is to choose an appropriate program from the selection of available options. There are many programs that offer POP3 services, and each one has its own features, so it’s important to research them thoroughly to find the one that best fits your needs.
  2. Once you’ve chosen an appropriate program, the next step is to download it onto your computer or device. Depending on the platform you’re using, this may involve downloading the software through an online portal or via a physical disc or USB drive. After you’ve installed the program, make sure to launch it and go through any registration processes or settings customization required by your selected program before getting started with using it.
  3. You will also need to set up your connection settings in order for open source POP3 software to work properly. This involves entering information such as your email address, password, and relevant server settings into the program so that messages can be received and sent without issue. If you are unsure about any of these pieces of data, contact your Internet service provider for assistance obtaining them.
  4. Once setup is complete, all that’s left is to start managing emails with your open source POP3 software. This typically involves configuring folders and rules for incoming emails, sending outgoing emails through the same client and learning how to use useful features like flagging or marking important messages. You may even have access to spell checking or other advanced tools depending on which client you chose. Be sure to take some time familiarizing yourself with those functions when they become available as well.