Marketing email list software

Hi,

Does anyone routinely send out marketing emails to customers? What software do you use?

I'm on a Mac and Ubuntu so ideally don't want to have to use Windows for this.

Thanks

There are a ton of email companies out there that can do this. Tops would be Constant Contact, GetResponse and Aweber. You want to work with a company that you can upload a list and doesn't require a double-optin for the upload of emails.