I wrote about a company called Instant Attention last year, as I was impressed by their slick, effective technology for beating pop-up blockers.
At the time, I was touting this new breed of pop-ups that were using DHTML to get the pop-ups to pop past the blockers.
Recently, they rebranded as AdImpact, and their “floating layer technology” has a really cool, new feature: Mailgrab Functionality.
The Mailgrab Functionality enables their customers to use the popup layer to display a quick mail form, rather than directing user to a new page to opt-in to an e-mail list.
When you use this type of pop-up, the e-mail information (name, e-mail, and date) is saved directly to your AdImpact account to export to your list.
However, they also have built-in direct autoresponder integration for the following services: AutoResponsePlus, Aweber, GetResponse, IntelliContact, and ProAutoresponder.
Personally, I use AWeber, and it was very easy to set up the integration. You can see an example of the pop-up with e-mail opt-in at the Affiliate Tip blog.