CiviCRM Community Forums (archive)

are the such token in system available or how can i define my own?

Yes there are some default contacts available. You get the option to "Insert tokens" on Send Email and for new mailing compose screen.
For eg. check http://drupal.demo.civicrm.org/civicrm/activity/email/add?atype=3&action=add&reset=1&context=standalone
When you click on Insert Token, you will get a dialog to add tokens

In order to add custom tokens you will have to use token and token values hook.
http://wiki.civicrm.org/confluence/display/CRMDOC40/CiviCRM+hook+specification#CiviCRMhookspecification-hookcivicrmtokens
http://wiki.civicrm.org/confluence/display/CRMDOC40/CiviCRM+hook+specification#CiviCRMhookspecification-hookcivicrmtokenValues

For sample implementation check http://svn.civicrm.org/civicrm/branches/v3.4/drupal/civitest.module.sample

Hth
Kurund