Hi, I'm working with a client and developing a PHP/MySQL user-driven site. He wants users to have the ability to get their email address anonymized automatically (no prob so far), but he also wants them to have the ability to send to each others' anonymized emails using mailto: links, and get them relayed to the real emails (i.e., so they can email directly to those addresses through their own client). Anyone done anything like this? Can it be done using PHP? Any help is hugely appreciated; I'll lose this client if I can't pull this off, as it's a very important feature for the site.