Yes, depending on your number of monthly orders, you would need to pay extra for Unique Links. To know the exact rate, kindly email our Sales Team at firstname.lastname@example.org.
Since your Unique Links are being sent out from your email server, we will not be able to keep track of the amount of review invites sent. If you have a good email management service, you will easily be able to track and improve your review invites by looking at their open rates, click rates, bounce rates etc.
We can however help you keep track of the amount of reviews collected. To view that, simply login to your TrustedCompany business account and view the amount of 'Collected reviews' displayed on your dashboard. From there you can calculate your review response rate using the following formula:
Review response rate = (Amount of reviews collected / Amount of reviews sent out) x 100