SMS API

Reach every UK customer, the moment it matters.

Transactional and bulk SMS to any UK mobile through one REST call. Delivered in seconds, priced in pounds, with no contracts to sign.

Start sending → API documentation

4.65p

Per SMS, all-in

<5s

Typical delivery

Free credits on signup

Data residency (London)

Use cases

Built for every message a business needs to send

From order confirmations to appointment reminders — meet customers on the channel they read within minutes.

Alerts & notifications

Order confirmations, dispatch updates and payment receipts, sent the instant something changes.

Appointment reminders

Reduce no-shows with automated reminders. Schedule them once and let Automate send on the day.

Payment reminders

Prompt overdue invoices with a polite nudge. Templates keep every message on-brand.

Verification codes

Need one-time codes? The OTP API handles delivery, expiry and lockout for you.

Delivery & order updates

Tell customers when an order ships, is out for delivery, or a booking is confirmed.

Compliant by default

Opt-out (STOP) handling, a suppression list and content screening are built in for UK PECR.

For developers

Send an SMS in three lines

A plain REST API — JSON in, JSON out. No SDK to install; it works with any language that can make an HTTP request.

Get API key → Full API reference

Terminal

# Send a single SMS
curl -X POST https://api.bremlio.com/v1/messages \
  -H "X-Api-Key: br_uk_your_key" \
  -H "Content-Type: application/json" \
  -d '{
    "to": "+447700900123",
    "message": "Your order is ready to collect."
  }'

# Response
{
  "success": true,
  "message_id": "...",
  "status": "accepted",
  "credits_remaining": 24
}

# Recent messages + delivery status
curl https://api.bremlio.com/v1/messages/history \
  -H "X-Api-Key: br_uk_your_key"

Pricing

Pay per message. No monthly fees.

One simple GBP rate for UK mobiles. Top up by card; 1 credit = 1 SMS.

UK mobile

4.5p / SMS

All-in retail rate
Failed sends refunded automatically

Free to start

25 credits

On signup, no card required
Enough to test end to end

Top up

£any amount

Card payment via Stripe
Credits don't expire

UK numbers only (+44). Prices in GBP. Get started →