The "Display message to user" action should be optionally piped through the translation system via t().
See also: #1422996: localization and i18n integration, #1356982: Add i18n support, and #1026828: Please make 'drupal message' translateable .
You can do that via the included Rules translation module and i18n.
Comments
Comment #1
mitchell commentedSee also: #1422996: localization and i18n integration, #1356982: Add i18n support, and #1026828: Please make 'drupal message' translateable .
Comment #2
fagoYou can do that via the included Rules translation module and i18n.