Will messages show my own number as the sender?

Yes. Texts are sent through the SIM in the paired phone, so they arrive from your own mobile number rather than a shared shortcode or alphanumeric sender ID.

Do I need a contract with an SMS aggregator?

No. You use the ordinary mobile plan already on the SIM. There is no aggregator contract and no per-message platform markup between you and the carrier.

Can customers reply to my number?

Yes. Because it is a real number on a real SIM, replies come straight back to it and are forwarded to your application as signed webhooks.

Your Own SIM

Send SMS from your own SIM & phone number

Keep the number your customers already recognise. A self-hosted gateway sends and receives text messages through the SIM in your own Android phone — no shared shortcode, no rented sender ID, no aggregator in the middle.

Your number is your identity

When a message arrives from a random shortcode or an unfamiliar alphanumeric sender, people hesitate — and many simply ignore it. When it comes from your own number, it lands in the same thread as every previous conversation, looks personal, and invites a reply. Sending from your own SIM keeps that trust intact while still letting your software do the work.

This matters most for businesses that already talk to customers by phone: dealerships, clinics, logistics desks, field service teams and local stores. The number on your van, your invoice and your storefront is the same number your automated messages go out from.

No shortcode, no rented sender ID

Traditional providers ask you to provision a shortcode or register a sender ID, then charge per message on top of the carrier. With a self-hosted gateway you skip all of that. The handset uses its existing mobile plan, so your marginal cost per text is simply whatever your carrier already charges you — often a flat bundle. There is no platform sitting between you and the network taking a cut of every send.

Two-way by default

A real number is a two-way number. Customers can reply, ask a question, confirm an appointment or opt out — and every inbound message is pushed to your endpoint as an HMAC-signed webhook for your application to handle. You can auto-answer common questions, forward conversations into your CRM or helpdesk, or simply log them. Read how delivery works in the inbound webhook guide.

How it stays under your control

The SIM and the plan are yours — change carriers or numbers whenever you like.
Sending is one authenticated REST call from any ERP, CRM or accounting system.
API keys are issued at pairing and can be rotated at any time.
Nothing is shared with other senders — the gateway is dedicated to you.

The exact request shapes and authentication details are in the REST API reference. To get a number sending in minutes, follow the quickstart.

Scan to install

Send from your own number today

Install the Android app on the phone whose SIM should send, pair it, and you are live.

Read the quickstart → Get it on Google Play

Android SMS gateway · Two-way SMS for your CRM · Self-hosted OTP from your own SIM · REST API reference