I got the Pro version and that is really impressive what these guys did. Besides having a great product which works amazingly great, their support system is spectacular, similar than mine

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I used it for a client custom script, and had to tweak it a little for that purpose in order to invite people to calendar events. They basically walked me thru the changes that I needed.
After an invited guest registers he gets redirected to that calendar event so he could RSVP etc ...
While doing so, I had the opportunity to study the coding. Very clean and very powerful. I would recommend that to anyone looking for a contact importer.
It was a real pleasure to work with them. Very helpful and professional.
Since the providers change their access method once in a while, those guys stay on top things every time.
I wish them all the best. They more than deserve it.