An SMS API lets your application send text messages by making an HTTP request instead of using a phone. You send the recipient number and message to the API and it delivers the SMS to the mobile network.

How much does Bremlio's SMS API cost?

4.65p per SMS to a UK mobile, pay as you go, with no monthly fees. New accounts get 25 free credits and the minimum top-up is £10.

Which languages can I use?

Any language that can make an HTTPS request — the API is JSON in, JSON out. Examples are shown in cURL and Python, and the same request works from Node.js, PHP, Java, Go, Ruby and others.

Can I send to non-UK numbers?

Bremlio is UK-focused today and sends to UK mobile numbers (+44).

Home › SMS API

SMS API

Name: Bremlio SMS API
Brand: Bremlio
Price: 0.0465 GBP
Availability: InStock

Send text messages from your application with one HTTP request. Bremlio's SMS API is JSON in, JSON out, callable from any language — pay as you go at 4.65p per message, no monthly fees, no contract.

An SMS API lets your app send text messages programmatically instead of by hand. With Bremlio — operated by Bremlio Ltd in the UK — you authenticate with an API key, POST the recipient and message, and Bremlio delivers it to the mobile network and reports delivery status back. It suits transactional messages, notifications and bulk sends for UK developers, startups and businesses.

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Send a message

# cURL
curl -X POST "https://api.bremlio.com/v1/messages" \
  -H "Content-Type: application/json" \
  -H "X-Api-Key: YOUR_API_KEY" \
  -d '{"to": "+447700900123", "message": "Your order has been confirmed."}'

# Python
import requests
r = requests.post(
    "https://api.bremlio.com/v1/messages",
    headers={"X-Api-Key": "YOUR_API_KEY"},
    json={"to": "+447700900123", "message": "Your order has been confirmed."},
)
print(r.json())  # {"status": "accepted", "message_id": "…", "credits_remaining": …}

The response includes a message_id, the provider status (accepted), and your remaining credit balance. Check delivery later via the message-history API or the dashboard.

Features

Single REST endpoint — POST /v1/messages, JSON in and out.
Per-message delivery status and message history.
Bulk send and {name} message templating for personalised campaigns.
UK number validation built in; national (07…) or E.164 (+44…) accepted.
API-key auth with rotation.

Bremlio is UK-focused today (SMS and OTP); it does not currently offer voice or WhatsApp channels.

Pricing

Item	Cost
SMS to a UK mobile	4.65p
Monthly fee / contract	None — pay as you go
Free credits on signup	25
Minimum top-up	£10

See full pricing.

Frequently asked questions

What is an SMS API?: A way for your app to send text messages via an HTTP request instead of a phone — you send the number and message, and the API delivers the SMS.
How much does Bremlio's SMS API cost?: 4.65p per SMS to a UK mobile, pay as you go, no monthly fees. 25 free credits on signup; £10 minimum top-up.
Which languages can I use?: Any language that can make an HTTPS request. Examples are in cURL and Python; the same request works from Node.js, PHP, Java, Go and Ruby.
Can I send to non-UK numbers?: Bremlio is UK-focused today and sends to UK mobile numbers (+44).

Send your first SMS in minutes.

Get your API key free

Send SMS from your language

Copy-paste, runnable examples for common stacks: Python · Node.js · PHP · Java · C# · Go · Ruby.

UK SMS API · OTP API · Transactional SMS · Notifications API · Pricing · Developer docs