Can you recommend a low/no cost email service provider?

With gmail, you can manage all your other using gmails mail forwarding system. Just go to gmail>settings>accounts< "Add another email address" and just follow the instructions form there on

well this article basically sums up how to use gmail as your universal email
http://www.googletutor.com/2006/06/20/using-gmail-as-your-universal-email-account/

Thanks for the reference. I'll see what it says, but I'm not looking for multiple email accounts, I just want to send beaucoup messages from one account.

you're looking for a mass email platform - campaignmonitor.com and mailchimp.com are two services I've used that are both pretty impressive and are fairly inexpensive.

I would recommend VerticalResponse. They are significantly less expensive than MailChimp. You can create an account for free and try it out.