How to add one-click unsubscribe functionality to email newletters?

Question

I\'d like to customize the \"unsubscribe\" links in our email newsletters so that they remove the recipient with a single click. Right now they just point to a generic page

Answer 1

I give each email I send an ID, then look up the email ID when they click unsubscribe.

http://www.foo.com/unsubscribe.asp?ID=1234

And then unsubscribe the email address I sent 1234 to.