Last updated: July 20, 2026 · Operated by Nihnyx DBA ApptGuard
Who Sends These Messages
ApptGuard is a software platform operated by Nihnyx that enables service businesses (salons, barbershops, med spas, dental offices, tutors, and similar) to send automated SMS appointment reminders to their own clients.
Messages are sent on behalf of the business that the client has an existing relationship with, not by Nihnyx directly. The business owner is responsible for ensuring their clients have consented to receive SMS communications.
How Consent Is Obtained
ApptGuard captures documented, timestamped consent at the point an appointment is created, rather than relying on an unrecorded assumption:
- Online bookings: the client checks a consent box themselves before their appointment is confirmed. The exact time they checked it is recorded and stored with the appointment.
- Appointments entered by the business: the business owner or staff member checks a box explicitly confirming they've obtained the client's consent, which is timestamped and stored as their record of that consent — not just an assumption made when a phone number is typed in.
This creates an auditable consent record tied to each client, with a timestamp and the method by which consent was captured, rather than a one-time acknowledgment made during account setup.
What Messages Are Sent
ApptGuard sends only transactional appointment reminder messages. No marketing, promotional, or unsolicited messages are sent. A typical message looks like:
| Message Type | Frequency | Trigger |
|---|---|---|
| Appointment Reminder | 1–5 per appointment, depending on the business's plan | Automatically sent before appointment |
| Confirmation Request | Included in each reminder message | Included in reminder message |
How to Opt Out
Clients can opt out of SMS messages at any time by replying to any message with:
- STOP — unsubscribes from all future messages from that business
- HELP — returns contact information and opt-out instructions
Opt-out requests are processed immediately and automatically by our SMS provider (Twilio). Once a client opts out, no further messages will be sent to that number from that business.
Opt out is always free and takes effect immediately. Standard carrier message and data rates may apply.
Message Frequency & Rates
Message frequency varies based on the number of appointments a client has scheduled and the business's ApptGuard plan. Businesses may send between one and five reminder messages per scheduled appointment, depending on their plan tier.
Standard message and data rates may apply depending on your mobile carrier plan. ApptGuard does not charge clients for receiving messages.
Contact & Support
If you have questions about this SMS policy, received a message in error, or need to report an issue:
- Email: [email protected]
- Privacy Policy: nihnyx.com/privacy
- Website: nihnyx.com
This service is operated by Nihnyx, doing business as ApptGuard.