I've gotten at least a hundred of those emails from Boxer. You'll get them if you email from a 3rd party site and not from her email web form: http://boxer.senate.gov/contact/email/policy.cfm

When I write her I send from the 3rd party site and also copy and paste the letter on her web form and send it that way as well. You'll get the same email you got in response for the 3rd party email but you'll also get an actual response to the one on her web form.

Feinstein has changed hers to web form only for a response too. Here's her web form: http://feinstein.senate.gov/public/inde ... Us.EmailMe

I still send from the 3rd party sites like NumbersUSA etc. as well.