TRUSTe announce a certification program for emailers. If you satisfy some best practice list management requirements, you can post a "we don't spam" seal on your email sign-up pages.
It costs money, but I'd expect a response lift if you display one. In other areas (like shopping carts) these kinds of seals can make dramatic differences. TRUSTe, for example, cite a trial producing a 7% improvement in registrations.
If I read the requirements correctly, though, a pre-checked opt-in is considered an acceptable subscription practice for adding names to house lists. Not sure that anti-spam groups will agree...
Comments closed for this post