$tokens['event_type_id:name']['text/html'] = CRM_Core_PseudoConstant::getName('CRM_Event_BAO_Event', 'event_type_id', $event['event_type_id']);
$tokens['contact_phone']['text/html'] = $event['loc_block_id.phone_id.phone'];
$tokens['contact_email']['text/html'] = $event['loc_block_id.email_id.email'];
$tokens['event_type_id:name']['text/html'] = CRM_Core_PseudoConstant::getName('CRM_Event_BAO_Event', 'event_type_id', $event['event_type_id']);
$tokens['contact_phone']['text/html'] = $event['loc_block_id.phone_id.phone'];
$tokens['contact_email']['text/html'] = $event['loc_block_id.email_id.email'];