Link full URL variables for special actions:

{unsubscribe} -  Unsubscribe Link
{viewwebpage} - View as a web page link
{forwardfriend} - Forward to friend link
{facebook} - share facebook
{twitter} - share twitter
{linkedin} - share linkedin

We support the following variables in links which you can pass
{listid} - passes list id
{emailid} - passes email id
{campaignid} - passes campaign id
{profileid} - passes profile id
{messsageid} - passes message id
{domain} - passes domain id
{md5} - md5 hash of the email address