Automated appointment and booking reminders over SMS

Reduce no-shows with reminders that come from your real number. Schedule them from your booking system and let customers reply — SimGate handles both directions.

Fewer no-shows

Replies included

Your business number

Flat pricing

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Reminders that look like they came from you

Customers trust a text from a real local number far more than one from an anonymous shortcode. With SimGate, reminders are sent from your business's own SIM.

Schedule reminders from your booking system, and when customers reply 'YES' or 'RESCHEDULE', route that inbound message with automation rules or your own webhook.

Set it up

Schedule

When a booking is created, queue a reminder for 24 hours before in your system.

Send

At send time, POST the reminder to /v1/sms/send.

Handle replies

Inbound replies arrive as webhooks; auto-reply or notify staff with automation rules.

An inbound reply looks like this

json

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{
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  "id": "evt_123",
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  "type": "sms.received",
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  "createdAt": "2026-06-24T12:34:56.000Z",
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  "data": {
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    "deviceId": "android-5q15b182f2704gbz",
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    "from": "+1234567890",
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    "body": "YES",
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    "receivedAt": "2026-06-24T12:34:55.000Z"
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  }
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}

Signed webhook delivered to your backend when a customer replies.

Good for

Clinics, salons, and trades that live on bookings
Restaurants confirming reservations
Any business that loses money to no-shows

Frequently asked questions

Can customers reply to reminders?

Yes. Inbound replies to your SIM are delivered to your backend as webhooks, and automation rules can auto-respond or forward them.

Do reminders come from my business number?

Yes — SimGate sends through your own SIM, so the reminder shows your real number.

Can I schedule reminders in advance?

You schedule them in your own booking system or an automation tool, then call the SimGate send endpoint at the right time.

Turn your phone into an SMS API

Send and receive SMS from your own SIM at a flat monthly price. Install the app, connect a device, and call the API in minutes.

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