tree: 41cf33005b2f26044269594b9e1baf12db6d80c2 [path history] [tgz]
  1. configs/
  2. docs/
  3. site/
  4. tools/

Pony Mail

Pony Mail is a web-based mail archive browser licensed under the Apache License v/2.0 and built to scale to millions of archived messages with hundreds of requests per second.

Pony Mail allows you to browse and interact with mailing lists using Mozilla Persona or OAuth2 for authentication.


See for a demo.

Pony Mail works in both public, private and mixed-mode, allowing you to have one unified place for all your communication, both public and private.

Features include:

  • Importing from mbox files or an mod_mbox-driven site
  • Public and private list viewing based on auth
  • Cross-list threading
  • OpenSearch support for browsers (can add as search engine)
  • In-browser reply to mailing lists
  • Fast and intuitive searching
  • Threaded and flat view modes
  • Notifications of replies to emails sent via Pony Mail
  • Email and list statistics
  • Multi-site, Multi-list handling
  • Word clouds (yay!)
  • Fuzzy-logic email grouping/threading (based in part on JWZ's ideas)
  • Supports both custom OAuth, Google Auth and Mozilla Persona
  • Atom feeds for all lists (including private ones!)
  • Source view and custom range mbox export


  • Linux operating system (tested on Ubuntu, Debian, Fedora and CentOS - Windows or OS/X may work)
  • ElasticSearch backend
  • Apache HTTP Server frontend with mod_lua loaded OR
    • Nginx with nginx-extras (ng-lua module) AND lua-apr installed
  • Python 3.x for importing (with elasticsearch and formatflowed via pip)
  • A mailing list system:
    • MailMan3 if you fancy that (we have a python3 archive plugin)
    • OR any mailing list system of your choice (use archiver plugin with stdin)
  • Lua >=5.1 + lua-cjson, luasec and luasocket

Getting started

(Optionally see the detailed installation instructions for more information)

Supported Linux Distributions

For a quick guide to installing Pony Mail, please see the guides for:

Generic installation instructions

  1. Install Apache httpd + mod_lua and the lua libs (see if need be)
  2. Install ElasticSearch
  3. go to tools/ and run python - follow the instructions and enter info
  4. Fiddle a bit with site/js/config.js for now
  5. import mbox data with if need be
  6. All done :) But please see the detailed installation instructions for more details

Contributing to Pony Mail

We'd LOVE if more people would contribute to Pony Mail! Any form of contribution is most welcome, whether it be programming, documentation, evangelism, marketing, or helping out other users.

To contribute to Pony Mail, follow these steps:

Development Benchmarking

Pony Mail has been built for and tested with the mail archives of the Apache Software Foundation, which span more than 15 million emails sent across more than 20 years. To put things into perspective, importing all this on a modern machine (2xSSD with 64GB RAM) took around 12 hours and resulted in a performance at around 100 archive search requests per second per ES node, depending on mailing list size and available bandwidth.


This is a list of what mr. Humbedooh would love to get done:

  • Set up dir structure (DONE)
  • Import site data (DONE)
  • Import tools (DONE)
  • Import settings / setup tools (DONE)
  • Import, fix archiver (DONE)
  • Add license headers (ALv2) to everything (DONE(?))
  • Have reply feature actually work (DONE)
  • Split JS into smaller files for development, bundle together for releases (DONE)
  • Start on documentation
  • Rework JS, turn those ugly innerHTML hacks into proper DOM handling
  • Set up notification system (depends on reply system) (Sort of works, but still WIP!)
  • Have it work with ES with auth mode or via HTTPS