SMSTunnel for Make

Texts from your scenarios, from your own phone and number

Make app · a trigger and three actions

SMSTunnel for Make

Coming soon

Your scenarios write, your phone sends

Your scenario hands each text to your SMSTunnel account and your own Android phone sends it from its own SIM, so people see a number they know and can reply to. A scenario can also start when your phone receives a text. It works in any country your SIM can text.

What it does

Send an SMS: Sends a text to one phone number from your own phone and number.
Send a verification code: Sends a sign-in code by text. The message must contain the code, for example "Your sign-in code is 482913".
Get a message status: Returns whether a text you sent went out, by its message ID.
Watch received SMS: Starts a scenario when one of your phones receives a new text.

Each module sends to one number. To text several people, put an Iterator before the module.
For example: reminder texts before Outlook Calendar events, with a scenario that checks the calendar every 15 minutes.

Coming soon.

Want it early? Write to us.

Until then: Make's HTTP app

Make's own HTTP → Make a request module hands the text to SMSTunnel, and your phone sends it the same way.

1. Get your key

1. Install the SMSTunnel app from Google Play on your Android phone and sign in.
2. In your dashboard, open Apps → Add an app, pick Script or server, name it (for example "Make") and click Create the key.
3. Copy the key right away: it's shown only once. You can stop or delete the app there anytime, and Make can't send texts anymore.

Get the steps with your key in them

It opens Add an app with Script or server picked. Once the key is made, the dashboard shows every step and command with the key already filled in, ready to copy.

2. Add an HTTP module

Add HTTP → Make a request and fill in:

URL: https://smstunnel.io/api/v1/sms/send
Method: POST
Authentication type: API key, with a credential that sends your key in the X-API-Key header
Body content type: application/JSON, with only to and message (the example below)

Body: your number, in international format, and the text (up to 1600 characters)

{
  "to": "+14155550123",
  "message": "Reminder: your appointment is tomorrow at 10:30."
}

Map the number and the words from the modules before it. Put only to and message in the body: SMSTunnel refuses fields it doesn't know.
One module run texts one number. For a list, put an Iterator before the module.
Run the scenario once with your own number first.

If it doesn't work

401 "Invalid or expired API key": the key is wrong or was deleted. "API key is required. Use X-API-Key header.": the key isn't in an X-API-Key header. SMSTunnel reads the key only from that header: Bearer or Basic authentication won't work.
403 with PERMISSION_REQUIRED: the key may not send texts. Make a new one under Apps → Add an app.
400 "property … should not exist": the body has a field SMSTunnel doesn't know. Send only to and message (and, if you need them, deviceId and defaultCountryCode). "message must be shorter than or equal to 1600 characters": shorten the text. "Phone number must contain…": put the number in international format, like +14155550123.
400 with "to must be a string" and "message must be a string": the body didn't arrive as JSON. Add the header Content-Type: application/json.
404 "Cannot GET /api/v1/sms/send": the tool sent a GET. Choose POST.
429: too many texts at once. SMSTunnel takes 30 send requests a minute. Wait a minute and try again.
No text, but no error? If your phone is offline, the text waits and goes out as soon as the phone is back online. Open the SMSTunnel app on the phone to check it's linked.

Build it with an AI assistant

Copy this prompt into Claude, ChatGPT, Cursor or Copilot and replace the part in [brackets]. Don't paste your API key into the chat: the prompt doesn't need it.

Help me build a Make scenario that sends text messages from my own phone with SMSTunnel, through Make's HTTP app.

About SMSTunnel (https://smstunnel.io): my own apps and tools hand text messages (SMS) to my SMSTunnel account, and my own Android phone sends them from my own number, on my own SIM and plan. The phone runs the SMSTunnel app from Google Play (https://play.google.com/store/apps/details?id=io.smstunnel.app), signed in to my account.

What I want: [describe what should send a text, to whom, and when]

How it works:
- HTTP → Make a request: URL https://smstunnel.io/api/v1/sms/send, Method POST, Authentication type "API key" with a credential that sends my key in the X-API-Key header, Body content type application/JSON with only "to" and "message".
- The tool calls SMSTunnel's API: POST https://smstunnel.io/api/v1/sms/send with the headers "X-API-Key: <my key>" ("Authorization: Bearer <my key>", or HTTP Basic with the key as the password, work too) and "Content-Type: application/json", and a JSON body with only "to" (international format, like +14155550123) and "message" (up to 1600 characters). Optional: "deviceId" (which of my phones sends it) and "defaultCountryCode" (completes numbers written without + or 00). Any other field is refused with 400 ("property … should not exist"); a GET answers 404. A form body to=…&message=… works too.
- One recipient per request: SMSTunnel sends one text to one number. For several people, one request (or one notification) per number. In Make: one module run per number; for a list, put an Iterator before the module.
- Answers: 200 {"success": true, "messageId": "…"}; 401 wrong or deleted key; 403 the key lacks a permission ("code": "PERMISSION_REQUIRED"); 400 a missing, unknown or too long field; 429 too many requests (30 sends a minute, with Retry-After): wait and retry; without Retry-After, the plan's limit for the day or month is reached. If my phone is offline the text waits and goes out when it is back, within 3 days.
- The API key comes from my SMSTunnel dashboard (https://dashboard.smstunnel.io): Apps → Add an app → Create the key. It is shown only once and can send texts and check whether they went out.

Rules for your answer:
- Do not ask for my SMSTunnel password or API key and do not put a real key in your answer; I will not paste it in this chat.
- Phone numbers must be in international format (+ and the country code).
- Help me test it with my own number first.
- Only send texts people expect from me. No unsolicited texts.
- Use one HTTP module run per recipient.

Responsible use

Built for alerts to yourself and your team, and texts people expect from you. One text goes to one number. Sending unsolicited messages from a consumer SIM generally breaches mobile carrier terms of service.

Make is a trademark of its owner. SMSTunnel is a third-party integration and is not affiliated with, endorsed by, or sponsored by Make or Celonis.

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No phone paired yet?

Install the Android app and sign in with your account, and you're ready in about a minute.