Sent an email saying that I really liked the extension but would've liked to have seen a message letting subscribers know that they need to check their email to confirm their account. Received a very positive response to my feedback and it's been included in the most recent update.
Because this was a new component I couldn't find any reviews. I always like some real user reviews and some response to those reviews, and an indication of support before I purchase anything. I contacted JoomlaXTC for some more info but unfortunately I didn't receive a reply.
I've seen poor reviews in this forum before that have been responded to by the software maker. My preference though is that I receive a direct reply to instill some confidence in support.
Support is not done by email -> but through our support ticket system: