OpenEMM – Open Source Software

OpenEMM: Free e-mail marketingFree open source software for e-mail marketing

OpenEMM is the open source edition of the award-winning E-Marketing Manager (EMM). OpenEMM is suitable for those of you, who are fine with a limited set of features for e-mail marketing and who have no problem to install and administrate the software themselves. Since OpenEMM is hosted by its user, it meets the criteria of an in-house software and is associated with no cost of use.

Open Source Software for e-mail & marketing automationWorld's most successful e-mail marketing software

OpenEMM: Open-Source-Variante des EMM

OpenEMM is an Open Source web-based enterprise application for e-mail and marketing automation.

The tool enables you to create and send e-mail newsletter and service e-mails (like transaction e-mails and event or date triggered e-mails). Furthermore you can of course control and organize your lead management.


Downloads worldwide

To summarize it: OpenEMM is a tool for customer relationship management by e-mail.

Of course, you also control and organize your lead management.


OpenEMM FunctionalityThe most important functions at a glance

  • great user interface
  • template-based HTML mailings
  • automatic bounce management
  • mail opening and link tracking
  • lots of graphical real-time statistics
  • content management system
  • self-defined and behavior-based target groups
  • multiqueue mail backend for maximum sending performance
  • time-driven automated data import and export
  • extensive set of web services
  • plugin interface to easily extend the core functionality
  • scripting feature to enhance the functionality of OpenEMM with triggerable customized actions
  • audit-proof user activity log

About OpenEMM

OpenEMM is the first open source application for e-mail marketing. Its code base has been developed since 1999 and is used – as part of the commercial software product E-Marketing Manager (EMM) – by companies like Conrad Electronic, DEVK, e.on, Freenet or members of the Otto group.

The software offers already more than 90% of the functionality of most commercial products and some features most commercial products do not offer right now (for example MySQL support and plugin interface).

The main difference to its commercial brother is, that OpenEMM is an easy to set up single-server solution. While EMM provides a richer feature set and operates distributed on several servers for a better performance. With the Software as a Service (SaaS) solution you also benefit from the CSA Whitelisting.

To provide you with free service & support are operated on this website such as a FAQ database and support forums. The available content is continuously enhanced by feedback from the OpenEMM user community!

Good reasons to set the OpenEMM

There are a lot of reasons why you should choose OpenEMM as your software for sending, managing and tracking e-mailings, e-mail newsletters and transaction mails. Look for yourself:


General reasons for the OpenEMM
  • OpenEMM is – opposed to Outlook & Co. – a software suitable for sending and tracking mass mailings
  • OpenEMM can send both simple mailings as well as date-based and action-based emails and service emails
  • OpenEMM is free of charge and open source
  • OpenEMM currently has more than 600,000 downloads
  • OpenEMM offers commercial services from the original developers of the software
  • with EMM as “big brother” of OpenEMM there is an upgrade opportunity for even more functionality
Usability of the software
  • It offers a modern web-based graphical user interface
  • User interface is available in English, French, German, Italian, Portuguese, Spanish and Chinese
  • The tool offers powerful features for targeting
  • The software provides realtime statistics with bar charts for quick comprehension
  • OpenEMM comes with a content management extension to manage HTML mail templates, module types and HTML content modules (including thumbnails and previews)
  • It offers wizards for important tasks like data import, mailing creation and data export
  • The tool has no limits for the number of subscribers, mailing lists and emails to send
  • OpenEMM offers lots of interfaces to connect with 3rd party systems (HTTP request endpoints, webservices, time-driven automated import/export)
  • The software is very well documented (install & admin guide, user manual, context-sensitive online help)
  • It is provided with free support via this website (FAQ, forums)
  • OpenEMM can be customized via plugins for your individual needs (GUI customizing via CSS)
Technology of the software:
  • OpenEMM offers all the features you would expect from a state-of-the-art e-mail marketing software
  • The software is available for Windows and Linux
  • The tool relies on a proven open source software stack
  • OpenEMM can be operated on a cheap Linux server
  • It is based on a proven commercial software product, used to send out billions of e-mails/year

References & Opinions

OpenEMM Demo AccountSee for yourself

Do you want to test OpenEMM without installing it first? No problem. For that reason, we provide a server with a demo account of OpenEMM 2015 which is open to the public.

Features, which are disabled for this demo account due to security concerns:

  • management of users and their permissions (view, new, edit, delete)
  • upload of images for HTML mails
  • sending of mailings (admin and test mailings are permitted)
  • Action “Send service-mail”
  • mail forwarding and autoresponder mails (backend functions for bounce filters)
  • online update

To log in please use the following access data:
Username: User
Password:  testme

Please do not save any personal data in this account, as the access is freely available!

Requirements & TechnologyWhat do you need to run OpenEMM?

To run OpenEMM you need nothing special and – of course – only open source software!

  • OpenEMM offers all the features you would expect from a state-of-the-art e-mail marketing software
  • OpenEMM is available for Windows and Linux
  • OpenEMM relies on a proven open source software stack
  • OpenEMM can be operated on a cheap Linux server
  • OpenEMM is based on a proven commercial software product, used to send out billions of e-mails/year

General requirements for the server you want to use for OpenEMM:

  • minimum of 1 GByte RAM, 2 GByte is recommended
  • shell access (via SSH) with root user rights
  • fix IP address
  • no need of a dedicated server – virtual server (e.g. VMware) is okay
  • first choice: RedHat Enterprise Linux 6.x or higher or compatible (like CentOS 6)
  • second choice: Ubuntu 10 or higher or Open Suse 10.x or higher
  • third choice: (due to lower platform reliability): Windows
  • Sun Java SE JDK 8
  • Apache Tomcat 7 or 8
  • MySQL 4.1.18 or higher (we have not used older versions)
  • Sendmail 8.9 or higher or Postfix 2.6 or higher (not required for Windows version of OpenEMM)
  • Python 2.4.x or higher (but not 3.x!)

If you get OpenEMM running on platforms not mentioned here, please notify us at (subject: “OpenEMM requirements”) so that we can update this page with your knowhow.

  • Java is a registered trademark of Sun Microsystems, Inc.
  • Linux is a registered trademark of Linus Torvalds.
  • MySQL is a registered trademark of MySQL AB.
  • Windows is a registered trademark of Microsoft Corp.

All other product names mentioned herein and throughout the entire web site are trademarks of their respective owners.

Ready? Here you can download the OpenEMM and everything else

The OpenEMM is offered for free download via You will receive all necessary documents there, e.g. Software, installation guide, documentation, extensions.

You need help?We offer numerous commercial services to assist you

If you can not get on with the free help offers or have no resources left, we are happy to assist you with the following fee-based service offers.

The Support Service offers you help on the installation, configuration and operation of OpenEMM. To order Support Services and for questions regarding OpenEMM, simply fill out our contact form. We ask for your understanding of the fact that we are unable to offer unpaid advisory and consulting services for OpenEMM.

We charge 150 Euro/hour (via PayPal) for any work carried out. You will of course receive an offer in advance for the requested service.

Would you like to concentrate on the marketing aspects of e-mail marketing right from the beginning? If so, leave the installation and configuration of open EMM on your hardware to us.


  • Setting up OpenEMM on the hardware provided and prepared by the client
  • Setting up of a MySQL scheme on the database provided and prepared by the client

Required client-side prerequisites for the Setup Service:

  • Red Hat Linux-based system –

Commercial solution: Red Hat Enterprise Linux 4 (
Free solution: Red Hat Fedora 5 (
free solution: CentOS (RHEL clone,

  • Access as super-user via Secure Shell (SSH) protocol
  • Valid IP address and access to Domain Name Services (DNS)

If you wish, we can procure the necessary hardware and prepare it accordingly (not included in Setup Service; offer prepared upon request).

Costs: 750 € net

If you do not want to operate OpenEMM yourself, just use EMM-Xpress, our Cloud variant. You do not then operate the hardware, thus obviating all corresponding aspects; you simply operate the software with your web browser. Incidentally, you benefit from even more features and a responsive user interface for eMM-Xpress …

The ready-to-operate configured hardware is provided in a professional data center and includes the database, the administration and an unlimited sending volume.

  • Complete Basic package: 99 Euro/month (up to max. of 50,000 profiles/minimum period: 6 months)
  • Compete Standard package: 149 Euro/month (up to max. of 200,000 profiles/minimum period: 12 months)

Optional Support package:

Our experts are available to answer all of your technical questions for 49 Euro/month (minimum period: 6 months)

The supplier of services for eMM-Xpress is our e-Xpress-mailer GmbH subsidiary. More details here.

All prices given are exclusive of applicable value-added tax. This offer is valid for a period of 30 days. Pricing errors reserved. Our Terms & Conditions apply.

If you would like to use the full scope of the E-Marketing Manager, we recommend you upgrade to EMM SaaS or EMM Inhouse. Profit from additional components such as multi-client capability, cross-media (fax, SMS, MMS, print), personalized PDFs, shop tracking, comprehensive statistics and much more. E-Marketing Manager here supports multi-server operation, making sending performance scalable.

Contact us for details or find out more on the website about the many possibilities that an upgrade offers.

Roadmap OpenEMMRoadmap for OpenEMM (as of May 21, 2018)

OpenEMM is the leading open source e-mail marketing software available right now. Nevertheless, development of OpenEMM is never finished, because we want OpenEMM to become the leading e-mail marketing software in general – not only in the open source market segment.

Here you can see what is planned tentatively for the next releases of OpenEMM – your input is welcome (see e-mail address at the end of this page or use our forum Suggestions).

coming soon

The next release: OpenEMM 2019

The next version of OpenEMM will be a fork of the commercial software EMM, which is in further development since 2015.

The following features are planned for the next release:

  • completely revised state-of-the-art GUI
  • dashboard with calendar for campaign planning
  • graphical workflow manager for multi-stage campaigns
  • many new statistics reports
  • numerous new features for GDPR compliance
  • additional options for import and export of recipient data
  • several new webservice methods

Beta Release: March 2019
GA Release: May 2019

OpenEMM 2015 R3

  • support of Postfix as an alternative to Sendmail
  • fixes for all known bugs

GA Release: published

OpenEMM 2015 R2

  • auto import/export supports FTP connections
  • online help updated to feature set of OpenEMM 2015
  • OpenEMM can be compiled with Tomcat 8
  • fixes for all known bugs

GA release: published

OpenEMM 2015

  • new target groups based on mailing received, mailing opened and link clicked
  • time driven automated import and export
  • FCK editor replaced with CK editor
  • bulk download for graphics components of a mailing
  • HTML mailing preview with optional image suppression
  • double opt-in action with option for multiple opt-ins
  • new webservices for bulk operations
  • more options for user self service
  • extended user activity log for better monitoring
  • information about former failed logins
  • configurable mailing generation lead time
  • several usability improvements
  • minor improvements like more reasonable default settings, better sorting, improved output formatting, more error reporting, improved online update, etc. (see CHANGELOG file for details)
  • code and libraries ported to run with Java 8 and Tomcat 7 or 8

GA release: published

OpenEMM Add ons

Of course, we cannot guarantee any of these dates, but we will post updates as soon as we know better.

Please feel free to contact us with your feedback on this roadmap, your suggestions for new features and contributions to support the development of OpenEMM:

OpenEMM NewsletterRegister for the latest news

If you want to receive all official news regarding OpenEMM directly in your mailbox, register for the OpenEMM newsletter. This will help you to stay on top of the latest OpenEMM announcements and developments without visiting this website again and again. Please note, the newsletter is only available in English.

We would be glad if you like to provide us with some additional information about yourself! But mandatory is only your e-mail address. When you are finished simply click the button “Subscribe now” at the end of the form.

In any case, be assured that we will use your personal data only for delivering the OpenEMM newsletter!

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