How to Send Text Message (SMS) Appointment Reminders to Clients

NutriAdmin can now send your clients a short text message reminder for their appointments, on top of the email reminder you already know. The text contains just the essentials — your name and the date and time of the appointment — so clients see it at a glance, even on their lock screen.

Before you start

1. Get your client's agreement first. Only send text reminders to clients who have told you they want them — for example when booking the appointment. Text messaging rules (especially in the US) require this consent.
2. Add the client's mobile number to their record. Open the client's record and make sure both the phone number and the country are filled in. Landlines won't work — it must be a mobile number.

Sending a text reminder

1. Go to your Calendar and create (or edit) an appointment with a client selected.
2. Tick Send reminder and choose how many hours before the event it should go out — exactly as you would for an email reminder.
3. Tick Also send a text message (SMS) reminder with the date and time. You'll see a note reminding you to only enable this for clients who have agreed to receive texts.
4. Click Save Event. That's it — the text will be sent at the same time as the email reminder.

What your client receives

Your client gets a short, automatic text like this:

Reminder: your appointment with Jane Smith is on Monday, 31 August 2026 at 12:01PM. Reply STOP to opt out.

The message always shows your name and the appointment's date and time in your timezone, using your calendar's time format. It cannot be customised — if you want to send richer content, use the email reminder, which supports templates.

Clients can opt out at any time by replying STOP to the message. If a client has opted out, future texts to their number will not be delivered.

Troubleshooting

• "This client has no phone number or country code on record" — add both to the client's record and save the appointment again. The email reminder still goes out either way.
• The text was skipped — after saving, NutriAdmin tells you if the text couldn't be scheduled, for example when the number isn't a valid mobile. The email reminder is never affected.
• Was it sent? — check your notifications in NutriAdmin: you'll see an entry confirming the text message reminder was sent to your client.
• To protect everyone from spam, there are sensible daily limits on how many texts can be sent. If a limit is reached, NutriAdmin lets you know when you save the appointment, and the email reminder still goes out as normal.