Techjoomla and Invitex is how a Extension and suport need to be.
ALWAYS i get a very competent and friendly Awnser on my Requests in no time, the developer helps me to configurate and give me hints in a very professional manner
I recomend this Extension to everyone. The Functionality of this Extension is also outstanding and beyond it is a must have tool on every Joomla site to invite new Members !!!