d/l doc/pdf from behind SSL service invoked by email? Any ideas?

[MikeL04]

Hello all,

I need a way of delivering documents in an email by means of a link or links to a pdf/document in an email.

I was thinking that I could create a page on a public website which takes the parameters passed via the link in the querystring to validate the user and invokes a webservice or something that will download the corresponding PDF or whatever format the document is in and display it in the browser. Problem is the files are behind a SSL secured portion of of the website and thus require authentication for access. I want to avoid including the encrypted password in the querysting.

Any ideas or thoughts on a better way to accompish this functionality?

Thanks,

Mike