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WhatsApp for Business Messaging, Reimagined

QuickSMS helps you connect with customers using branded messaging, and rich interactive features. In a secure and trusted application.

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Why QuickSMS

Deliver exceptional customer service through a secure, trusted channel

A smartphone screen displaying a WhatsApp chat about home speakers, with images of two speakers and labels such as 'Buy Now' and tags like 'Assisted Sales', 'Conversational Commerce', and 'Integrated Product Catalogue'.

A smartphone screen displays a WhatsApp conversation with a business named QuickSMS, showing a customer name Alice giving a feedback rating of 8 out of 10, and the message thanking her with a discount link.

Send high-quality images, PDFs, tickets, and video files directly through WhatsApp Business, no links required. Perfect for boarding passes, insurance documents, or school reports. Rich media messaging makes your brand feel trusted, personal, and easy to engage with.
While WhatsApp doesn't support native calendar integration like RCS, you can share ICS calendar files or smart appointment links that auto-sync to the user’s device. Great for open days, appointments, or interviews, sent in a familiar, highly used channel.
Boost engagement with WhatsApp’s interactive message templates, including CTA buttons (e.g. “Confirm”, “Pay Now”, “Track Delivery”) and quick replies. Ideal for automating support, confirming bookings, or driving conversions in a GDPR-compliant, secure way.
WhatsApp provides real-time delivery and read receipts for every message, perfect for urgent updates, one-time passwords, or important school or banking alerts. Unlike SMS, you’ll know exactly when a message was seen.

WhatsApp APIs Built for Developers

Build fast with developer-first WhatsApp APIs. Test in a secure sandbox, deploy with clean code libraries, and track everything via webhooks and real-time analytics. Designed to keep you building and not troubleshooting

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Computer screen displaying JSON API POST request with URL, headers, and a JSON body containing reference, CID, MSISDN, and seentime fields.

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Screenshot of a JSON API POST request to quicksms.com for sending a receipt, showing URL, headers, and example JSON data with reference, CID, MSISDN, and seentime fields.

QuickSMS provides fully open, developer-friendly API documentation.

No login required.

You'll find clear authentication steps, sample requests and responses, error codes, and integration guides for SMS, RCS, and WhatsApp Business.

Our docs are designed to help developers send their first message in minutes, with language-specific examples and real-world use cases.
Get started fast with QuickSMS.
Sign up, generate your API key, and send your first SMS or WhatsApp message in just a few minutes.

Our streamlined onboarding process, sandbox environment, and copy-paste code samples reduce setup friction and get you building faster.
QuickSMS offers a secure sandbox environment to help you test API requests without sending live messages or incurring costs.

Use the sandbox to simulate SMS, RCS, and WhatsApp messaging flows, validate your payloads, and ensure everything works before going live.

It's ideal for developers building applications that require high confidence in delivery and behaviour.
Handling mission critical messaging with complete failover and the power to process millions of requests 24 hours per day 7 days per week. Handling up-to 70,000 API requests per second

API Documentation

WhatsApp for Business API - FAQ

The WhatsApp Business app is for small businesses, managed on a single phone.

The API (or Platform) is built for larger companies, integrated into systems, automated, and able to send high volumes.
WhatsApp pricing depends on the type of conversation (utility, marketing, service, authentication). Full details can be found on the WhatsApp website.

QuickSMS simply adds £0.005 per billing event to cover handling.
Not today. Our last understanding is that the NCSC has prohibited its use, mainly for security and audit reasons. But things can change; it’s a moving situation.
Yes. A verified Meta (Facebook) Business Page is part of the setup process and is required for verification.
We’re big believers in RCS, because it’s run by mobile networks and has stable pricing.

WhatsApp is powerful, but its pricing changes often, which makes long-term planning harder. Many businesses choose both, RCS where available, WhatsApp for global reach.