This was on SOFII this week (seriously, you need to check that site out!). Anyway this is a great concept.
A chaperoned email is an email that a publisher sends to its own online magazine subscribers, on behalf of a nonprofit. The email may ask for a donation, or ask for another action, such as writing a letter to a politician, or completing a survey. The email itself is usually branded with the nonprofit’s own email design, including logo and photos. This is often accompanied by an endorsement from the editor of the publication at the top.
Did it work:YES
Not only did the chaperoned emails raise $23,206 in unrestricted funds for CARE, they also added 376 new donors at an average donation of $62, with a net profit per donor after expenses of $23