With cPanel & WHM 11.28 the ability for server owners to provide custom webmail applications was introduced. To demonstrate this feature we introduced the Atmail Open plugin.

Recently Atmail Inc., the creators of Atmail Open, decided to no longer provide the open source version of their product. Due to this change, cPanel will no longer distribute, or provide, the Atmail Open plugin via our Plugin service. The last update, 1.0.5, of the plugin was released in early May 2012. If you have not already, please verify your version of the plugin has been updated. The Atmail Open 1.0.5 release addresses some security issues.

In August 2012 we will no longer provide the Atmail Open Plugin. In anticipation of this we have marked the plugin as End of Life and will be provided in its current, and final, state. We will not release security patches for this application. After August 2012 the Atmail Open plugin will no longer be available for installation.

What does this mean for you?
If the Atmail Open plugin is installed on your server, it will continue to function. Since no further updates or fixes are forth coming on this application we encourage you to begin planning an exit strategy with your customers. From now until we remove the Atmail plugin in August 2012, you will be able to uninstall the application using the Manage Plugins interface in WHM. When we no longer provide the plugin, it can only be uninstalled using the following commands:

cd /usr/local/cpanel/modules-install/atmailopen-*
./uninstall 

If you have not installed the Atmail Open plugin, then no changes or action are needed.

Will cPanel Replace Atmail with something else?

We are not evaluating a replacement for Atmail Open, at this time. We currently provide three webmail clients: Horde, Roundcube, and Squirrelmail. There are a variety of webmail applications available in our application catalog.

We hope you enjoyed the use of Atmail Open while it was available.