Confirmation via hyperlink ?

Hi!
 
 As far as I remember, I think I once saw a posting, where someone stated, that he had done some sort of solution to use hyperlinks to confirm an email - instead of an email-confirm address.
 
Is this possible ?
 
Another question: Instead of people having to log in to tmda-cgi to check/release mail, is there a way to send a list of pending mails (maybe once a day) - including hyperlink's (in the mail) they can click in order to release a mail - instead of using mails or having to log into tmda-cgi to release the items in question ?
 
Regards
/Brian