Downloads & Sources

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Supported Platforms

See supported platforms for a list of platforms we support as well as system requirements.


Since Thunderbird 24 to 68, OBM use official version of Lightning.

Install Lightning from modules page in thunderbird and install from file

OBM connector last version : xpi_icon Latest OBM connector for Thunderbird

Install OBM 3.1

RoundCube webmail is include since 3.0 to facilitate the installation.


Read the full documentation to install OBM 3.1 on Wheezy or browse debian packages repository


Read the full documentation to install OBM 3.1 on CentOS 6 or browse centos packages repository # Install OBM 2.5 OBM and Roundcube with addressbook plugin have to be installed separately.

OBM Core


Browse Debian Packages for OBM 2.5 Install OBM 2.5 on Debian Squeeze Install OBM 2.5 on Debian Lenny


Browse Centos Packages for OBM 2.5 Install OBM on CentOS 6


The addressbook from OBM is fully synchronizable with the one from the webmail Roundcube. Find the last stable addressbook plugin here or the full webmail with an already embedded plugin here. (See also Synchronize OBM with Roundcube)


OBM uses the Git versioning system. Once git is installed on your computer, clone the repository: git clone obm You will be on the master branch, ready to develop on the latest version of OBM. If you want the specific sources of your OBM version, please enter the following command: git checkout For instance, if you want the sources of OBM, do: git checkout

Older Thunderbird Connector

Find older obm-connector plugin into the stable directory and see supported platforms for compatibility. Air Force High