You can use following variables for this email template:

{first_name}	- Member First Name
{username}	- Member Username
{password}	- Member Password
{referral}	- Referral ID
{login_url}	- Login Link
{first_name}	- Member First Name
{username}	- Member Username
{password}	- Member Password
{activate_link}	- Activation Link
{first_name}	- Member First Name
{username}	- Member Username
{password}	- Member Password
{activate_link}	- Activation Link
{first_name}	- Member First Name
{username}	- Member Username
{password}	- Member Password
{login_url}	- Login Link
{friend_name}	- Friend First Name
{first_name}	- Member First Name
{referral_link}	- Referral Link
{first_name}	- Member First Name
{amount}	- Amount
{transaction_id}	- Transaction ID
{first_name}	- Member First Name
{transaction_id}	- Transaction ID
{amount}	- Amount
{reason}	- Decline Reason
{first_name}	- Member First Name
{transaction_id}	- Transaction ID
{payment_type}	- Payment Type
{amount}	- Amount
{status}	- Transaction Status
{member_id}	- Member ID
{first_name}	- Member First Name
{last_name}	- Member Last Name
{unsubscribe_link}	- Newsletter Unsubscribe Link