Be real careful with this app before you do anything with it. Do not waste your time till you find out that you can not upload your subscribers. Aweber decides which email address can be loaded, even they are your long time clients. But my subscriber listing has sunk into Aweber data, which you will not be able to get it back. Also when I signed in the aweber and paid by my credit card. When I did test email, the email footer showed my personal credit card billing address. Of course it can be edited. But you need to have actual postal address. So be prepared if you want your clients to know where your warehouse is.
This app totally sucks. All it does it connect your customers to a list. It doesn't have any fuctionality to add them to different lists depending on what they buy. And the support people are hopelessly not helpful. They just cut and paste answers that don't even relate to you. I used to have a free app that did lots of Aweber connection stuff but it seems to have mysteriously disappeared.