Bulk SMS notifications from your own SIM

Send updates and notifications to your contacts from your own number, billed at a flat monthly rate instead of per message. Built for responsible, consented messaging.

Flat monthly cost

Your own number

Simple loop over the API

Delivery logs

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Predictable cost for notification sends

Sending the same update to many contacts is where per-message pricing hurts most. SimGate's flat monthly plans give you a generous allowance so a notification batch doesn't come with a surprise bill.

You send in bulk by looping over your recipient list and calling the send endpoint for each one, respecting your plan's daily and monthly limits.

Send responsibly

Bulk messaging is for recipients who opted in. Always honor consent and unsubscribe requests, follow local SMS regulations, and avoid unsolicited marketing — it protects your number and your deliverability.

How bulk sending works

Build your list

Collect opted-in recipients in your own system.

Loop and send

Iterate the list, calling /v1/sms/send for each, pacing within your plan limits.

Track

Watch delivery state in logs and via each returned messageId.

Send to one recipient (repeat per contact)

javascript

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const res = await fetch("https://api.simgate.app/v1/sms/send", {
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  method: "POST",
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  headers: {
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    "x-api-key": process.env.SIMGATE_API_KEY,
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    "Content-Type": "application/json",
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  },
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  body: JSON.stringify({
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    deviceId: "android-5q15b182f2704gbz",
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    phoneNumber: "+1234567890",
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    message: `Your code is ${code}`,
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  }),
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});
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const { messageId } = await res.json();

Frequently asked questions

How many messages can I send?

Each plan includes a daily and monthly allowance. Choose a plan that covers your batch sizes, and pace sends to stay within the daily limit.

Is this for marketing blasts?

SimGate is best for consented notifications and updates. Unsolicited marketing risks your number's reputation and may violate local law — always message people who opted in.

Can I see which messages were delivered?

Yes — every send returns a messageId and appears in your logs with its delivery state.

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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