Thank You! Your Yelp Reviews.
Yelp contacted me with the wonderful news that my business has received a big "Congratulations" from them. This is because of your reviews.
A very special thanks to all my clients that have left reviews!
Note, the "us" is the "royal" usage that is both singular and plural. For my business, it's the singular usage being that my business has one employee (that would be me).