Stability over several years of usage. We have had no issues at all. Reports are easy to use. And it just works. Also, the ease of implementation. It was super easy to get started. And the payment terms were very friendly. As a startup it meant a lot.

Seamlessly integrates, works well, great for lead gen and address books.

Cloudsponge is really a breeze to integrate and get up and running within a very short period of time. Testing was easy and took less than an hour and so was moving to production. Everything worked right out of the box with no hiccups. It looks very slick and is also responsive just like it says. It was also very easy to customize and work in different ways. For example you can give direct buttons for different mailboxes like yahoo, msn etc, versus giving a single button by which a user can choose from a whole bunch of mailboxes.