Authenticate or Delete from a link
I am looking to create a Newsletter type system which allows people to Subscribe and Unsubscribe to emails.
The creation of the email isn't an issue and neither is the insert/Register form however I would like people to receive an authentication email (again not a problem) however I would like a link to be contained that the user clicks to authenticate their request - this I do not know how to do.
I would also like to create a link to unsubscribe their email address, which I also do not know how to do.
I am sure there are others here that have done this and would appreciate any pointers to get me going.