Cool! This sounds like a lighter-touch way to do it. A long time ago, to help with the filter issue, I went through a phase of signing up for services as (mygma

Cool! This sounds like a lighter-touch way to do it. A long time ago, to help with the filter issue, I went through a phase of signing up for services as (mygmail)+(theirdomain)@gmail.com (though perhaps it would have been smarter to do +spam@gmail.com). Though occasionally these places will send messages you want to read, so I like your solution more.