The following variables can be used to insert user/community specific data:
<sender_email>	=	Sender's Email Address
<sender_first_names>	=	Sender's First Name
<sender_last_name>	=	Sender's Last Name
<community_name>	=	Community's Name
<community_url>	=	Community's Web Address
<email>	=	User's Email
<first_names>	=	User's First Name
<last_name>	=	User's Last Name