SMS gateway + calls

Turn your Android phone into an SMS and calls gateway

Send and receive SMS, keep a call history, and auto-reply to missed calls — through the phone you already own. No gateway fees, no extra hardware.

See how it works
$0
SMS gateway fees
3 min
average setup time
Android 7+
works on a regular phone

Everything you need for SMS and calls

One dashboard and API. Your Android phone is the gateway — no self-hosting, no extra SIM from a gateway vendor.

Two-way SMS

Send and receive SMS from the dashboard and API. Conversations feel like chat, with delivery status.

Call history

Answered, missed, and rejected. MasterCRM sees calls that a classic SMS gateway never will.

Auto-responder

Automatic SMS after a missed call, a keyword, or silence for X days.

SMS campaigns

Reach many recipients from one place, with a queue and status reports.

Templates with variables

Reusable copy with name, gender, and custom fields — consistent messages, no copy-paste.

Multiple phones

Pair more Androids with a QR code and spread load across numbers.

REST API

API keys, programmatic sending, and partner docs — no SDK to wrestle with.

Contact CRM

Recipients, groups, tags, and consent. Notes on the contact, not in a spreadsheet.

Live in a few minutes

Account, app, QR scan — and you are sending.

From OTPs to missed-call follow-up

One gateway, many jobs — anywhere an SMS should reach a real phone.

OTP and 2FA

Verification codes from your own number, with no per-message gateway fee.

Order notifications

Confirmations, shipping updates, and reminders people actually read.

Appointment reminders

Fewer no-shows at clinics and services — automated, from a template.

Missed-call reply

A customer calls, you miss it — the system sends your SMS automatically.

Alerts and monitoring

Critical pings on the number in your pocket, not another Slack channel.

Two-way support

Replies land in dashboard conversations. A real thread, not just a blast.

Simple pricing, no per-SMS gateway fee

Plan placeholders — limits and prices will be confirmed. Messages go out on your carrier plan.

Free

$0 / month

  • 1 Android phone
  • up to 50 SMS per day
  • SMS + basic call history
  • Webhooks and statuses
coming soon

Pro

coming soon

  • up to 5 phones
  • campaigns and templates
  • SMS and call auto-responder
  • priority support

Custom

tailored

  • more devices
  • custom API limits
  • SLA and onboarding
  • dedicated contact

Frequently asked questions

What's the catch vs Twilio?

Twilio sells carrier-grade throughput. MasterCRM uses your Android and SIM — you pay your carrier, not a gateway rate. Twilio wins at millions of SMS a day; we win at hundreds to tens of thousands a month, plus call history.

Can I change the SMS sender ID?

No. Messages leave from the paired phone's number. That is the point (a real number, two-way chat) and the limit (no alphanumeric sender).

Does it work on iPhone?

The gateway needs Android 7+. The web dashboard works in any browser, including on iOS.

Can I receive SMS and calls?

Yes. Inbound SMS land in conversations. Calls (answered, missed, rejected) sync from the phone — and can trigger the auto-responder.

Do I have to self-host?

No. MasterCRM is a cloud service. Pair a phone, get a dashboard and API.