What is the SMS add-on and what does it cost?

It gives your business its own toll-free texting number for review requests, with 300 texts a month in your own words and STOP replies handled for you. It's $10 a month for each business and is available on Pro and Agency only. Texts don't roll over to the next month. On yearly plans the SMS add-on is $120 a year. There's no yearly discount on it, because texting costs us the same every month.