Offer payments.
Deploy anywhere.
Monetise at scale.

A complete payment solution for SaaS platforms and resellers across Europe, from OPP, part of the Worldline Group, and SUNMI, global provider of BIoT hardware.

SUNMI V3 payment device running the OPP payment app
SUNMI

Two partners.
One payment stack.

Together, OPP and SUNMI deliver a complete payment ecosystem: full-stack payment infrastructure combined with a comprehensive portfolio of SoftPOS-ready smart devices.

SUNMI: devices and fleet management

A certified portfolio of SoftPOS-ready devices, with central device management to deploy and manage fleets remotely.

Acme

Pay £30

Secured and powered by OPP

OPP: the full payment stack

Payment app, KYC and acquiring in one stack, with simple APIs, predictable pricing and built-in scalability.

What this means for software vendors

Deliver modern, device-based payment experiences as a native part of your software.

EUR

0,31

0,02

%

EUR

0,27

0,03

%

EUR

0,29

0,02

%

Monetise payments

No complex integrations. Competitive, predictable pricing and built-in scalability remove the usual complexity.

Hold here to pay

Restaurant Blue

£ 120

End-to-end payment proposition

Countertop, mobile, self-service and omnichannel, thanks to a wide portfolio of SoftPOS-ready devices.

Verify your account

Provide business details

Verify representative identities

Connect bank

Secured and powered by OPP

Streamlined merchant onboarding

Less implementation and deployment effort, with a drop-in, brandable UI that blends into your product.

Getting started

Configure account

Setup payment journey

Onboard merchants

Process payments

Simple APIs for fast integration

No payment expertise needed: simple APIs let you implement the solution quickly.

OPP partner dashboard on a laptop showing balance, merchants and transaction statistics

Your payments command center

Instant visibility on payment flows

Track merchant onboarding

Monitor platform health

Spot issues fast and act faster

Tap to Pay at scale

Android and iOS SDKs available

Set your own sell rates

Backed by Worldline

Hold here to pay

Café Bleu

£ 120

Vincent v. Gogh

Payment methods

Fix fragmented flows

One system instead of a patchwork of providers

No manual steps between payment and payout

Payment methods and checkout in one flow

Escrow, split payments and instant payouts built in

Are you leaving payment revenue on the table?

Take this quick self-assessment to evaluate your payment monetisation maturity, uncover untapped revenue opportunities and get actionable insights. Understanding your maturity level is the first step toward sustainable growth.

Say hi

Ready to turn payments into a growth engine? Talk to our team about device-based payments as a native part of your software.

Say hi

Ready to turn payments into a growth engine? Talk to our team about device-based payments as a native part of your software.

Say hi

Ready to turn payments into a growth engine? Talk to our team about device-based payments as a native part of your software.

Get started with payments today

Language & Theme
English (United Kingdom)

Get started with payments today

Language & Theme
English (United Kingdom)

Get started with payments today

Language & Theme
English (United Kingdom)