diff --git a/app/models/chat.rb b/app/models/chat.rb
index 58e65eec9..1daef6bcc 100644
--- a/app/models/chat.rb
+++ b/app/models/chat.rb
@@ -115,4 +115,55 @@ class Chat < ApplicationModel
   def self.seads_available(diff = 2.minutes)
     seads_total(diff) - active_chat_count
   end
+
+=begin
+
+cleanup old chat messages
+
+  Chat.cleanup
+
+optional you can parse the max oldest chat entries
+
+  Chat.cleanup(3.months)
+
+=end
+
+  def self.cleanup(diff = 3.months)
+    Chat::Session.where(state: 'closed').where('updated_at < ?', Time.zone.now - diff).each {|chat_session|
+      Chat::Message.where(chat_session_id: chat_session.id).delete_all
+      chat_session.destroy
+    }
+
+    true
+  end
+
+=begin
+
+close chat sessions where participients are offline
+
+  Chat.cleanup_close
+
+optional you can parse the max oldest chat sessions
+
+  Chat.cleanup_close(5.minutes)
+
+=end
+
+  def self.cleanup_close(diff = 5.minutes)
+    Chat::Session.where.not(state: 'closed').where('updated_at < ?', Time.zone.now - diff).each {|chat_session|
+      return if chat_session.recipients_active?
+      chat_session.state = 'closed'
+      chat_session.save
+      message = {
+        event: 'chat_session_closed',
+        data: {
+          session_id: chat_session.session_id,
+          realname: 'System',
+        },
+      }
+      chat_session.send_to_recipients(message)
+    }
+    true
+  end
+
 end
diff --git a/db/migrate/20151210000001_update_chat.rb b/db/migrate/20151210000001_update_chat.rb
new file mode 100644
index 000000000..1cdd924b4
--- /dev/null
+++ b/db/migrate/20151210000001_update_chat.rb
@@ -0,0 +1,25 @@
+class UpdateChat < ActiveRecord::Migration
+  def up
+    Scheduler.create_or_update(
+      name: 'Closed chat sessions where participients are offline.',
+      method: 'Chat.cleanup_close',
+      period: 60 * 15,
+      prio: 2,
+      active: true,
+      updated_by_id: 1,
+      created_by_id: 1,
+    )
+    Scheduler.create_or_update(
+      name: 'Cleanup closed sessions.',
+      method: 'Chat.cleanup',
+      period: 5.days,
+      prio: 2,
+      active: true,
+      updated_by_id: 1,
+      created_by_id: 1,
+    )
+  end
+
+  def down
+  end
+end
diff --git a/db/seeds.rb b/db/seeds.rb
index de600141b..13eace9bf 100644
--- a/db/seeds.rb
+++ b/db/seeds.rb
@@ -3269,6 +3269,24 @@ Scheduler.create_or_update(
   updated_by_id: 1,
   created_by_id: 1,
 )
+Scheduler.create_or_update(
+  name: 'Closed chat sessions where participients are offline.',
+  method: 'Chat.cleanup_close',
+  period: 60 * 15,
+  prio: 2,
+  active: true,
+  updated_by_id: 1,
+  created_by_id: 1,
+)
+Scheduler.create_or_update(
+  name: 'Cleanup closed sessions.',
+  method: 'Chat.cleanup',
+  period: 5.days,
+  prio: 2,
+  active: true,
+  updated_by_id: 1,
+  created_by_id: 1,
+)
 
 # install locales and translations
 Locale.create_if_not_exists(