After sending in one of our emailing Senators options on Alipac, I got the following response from Barbara Boxer. I'm wondering if the senators will find some way of blocking any email messages generated from this site. Has anyone else received a similar message?

Dear Friend:

Thank you for your e-mail message and for your interest in public policy.

In order to better serve the 36 million residents of California, I am now
using an e-mail system located on my Senate website. This system enables me to provide more and better responses to you and other constituents while saving taxpayer dollars. (Unfortunately, limited resources do not allow me to respond to e-mails generated by third-party organizations.) If you would like a reply to your message, I encourage you to visit my website e-mail system at http://boxer.senate.gov/contact/email/policy.cfm
Simply fill in the fields, type in your message, and click “Submitâ€