**1. Your provider account is out of balance.** SMS is sent through the Netgsm/Twilio account you connected — check the balance and top up from your provider's own dashboard. **2. Sender name approval.** Since you send under your own brand name, regulator approval takes about five working days, and nothing goes out until then. **3. Marketing consent.** Without an opt-in, marketing SMS is not sent. Operational messages (appointment reminders) still go. **4. Phone format.** Numbers must be in `+90…` or `05…` form. A malformed number fails silently. **5. Restricted hours.** In Türkiye marketing outside 08:00–22:00 is prohibited, so scheduled messages queue up. **6. Gateway status.** Check [status.glanevo.com](https://status.glanevo.com) to see whether the SMS gateway is up. **7. Blocked number.** A customer who replied “STOP” is blocklisted automatically; see profile → Marketing → opt-out. 📊 Marketing → SMS → History shows the status of every send (delivered / error / rejected).

SMS Not Reaching Customers

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