|A very insecure method to be actually implemented in an applicaton (or in any application).
But, yes, if you want to login the users automatically. Then you can create a URL that redirects the user to such a page where the UserName and the Password would be automatically set to login the user.
Tip: Instead of using a username/password there, you can use a token generated by the user each time he sends the email to others.
The sh*t I complain about
It's like there ain't a cloud in the sky and it's raining out - Eminem
~! Firewall !~