Why no SMS?
Text messaging looks cheap and isn't. Between carrier fees, 10DLC registration, and the labor to keep opt-outs clean, SMS quietly eats $15-40/mo per operator. Email deliverability from a warmed-up sending domain covers 95% of the "did they see it?" problem for booking confirmations and review requests. We may add SMS later as an opt-in add-on, but not to justify a higher base price.