Every
undelivered OTP
is a lost payment
BSG delivers one-time passwords and transactional messages for payment (PSP) and VAS providers across 200+ countries via 800+ carriers. A cascade of SMS → Viber → Voice with automatic failover catches every code that didn't land on the first try — so your authentication conversion stops depending on a single channel.
Delivery quality
Countries
delivery
In one Cascade:
SMS → Viber → Voice
Of direct carrier
routes
Average integration time
through a single API
Undelivered OTPs are
not a "technical metric"
This is lost revenue
-
Abandoned checkout
A user who doesn't get the code within 30 seconds won't "try later" — they'll leave. For a PSP that's a direct drop in payment conversion in merchant reports.
-
Chargeback from a failed SCA
A failed authentication under PSD2 shifts liability — and every disputed payment costs hundreds of times more than the OTP itself.
-
Tickets and merchant churn
"Your customers aren't getting their codes" — a merchant's fastest route to a competitor. Delivery quality is merchant retention.
-
A blind spot across carriers
A single aggregator with no per-carrier analytics = you hear about the problem in Nigeria or Brazil from a furious merchant, not from a dashboard.
Run the numbers on the right with your own figures — then send us your geos and we’ll show you exactly where your codes get lost.
Calculator for losses from undelivered OTPs
One platform — three PSP headaches solved
Tired of juggling
SMS vendors by region?
- Several providers = several APIs, SLAs, dashboards, and invoices
- Vendor lock-in with your current CPaaS and no clear exit
- Number verification accuracy "drifts" from market to market
One API for OTP across 200+ countries, MNP Lookup for precise routing, webhooks + DLR, a sandbox for load testing. One contract instead of a vendor zoo.
SCA demands keep rising, and
an audit already on the horizon?
- PSD2 today, PSD3/PSR — already here in 2025–2027
- KYC/KYB stalls on inconsistent number verification
- Vendor due diligence docs are forever incomplete
2FA with fallback channels as compliant SCA mechanics, Number Verifier and HLR Lookup for KYC/AML, delivery logs and an audit trail for the regulator, GDPR DPA included.
Checkout conversion is dropping
over verification?
- Failed OTP → abandoned cart → angry merchant
- Merchant onboarding stalls on phone verification
- Different providers across geos = different UX
Cascade delivery lifts authentication completion rate, silent number verification speeds up onboarding, and omnichannel notifications (SMS + Viber + RCS) keep merchants in the loop.
Build your delivery stack — all under one contract
SMS API
Viber API
Voice
Number Verifier
HLR / MNP Lookup
Rich channels
A2P SMS and OTP
Transactional messages and one-time passwords with direct routes, retry logic, and real-time DLR for every carrier.
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Viber Business Messages
The cascade's second channel and a standalone promo channel. Especially strong in Eastern Europe, where Viber is the leading messenger.
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Voice OTP
Reading the code by voice call — the cascade's last line of defense. Delivers where SMS is filtered or the SIM has no messaging plan.
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Number verification without SMS
Instant mobile number validation for KYC/KYB and merchant onboarding — less fraud, a faster activation funnel.
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Number check before sending
The live carrier and subscriber status before you pay for delivery or a billing attempt. Critical for DCB flows.
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Rich channels
Interactive messages, content previews, and subscription management — for markets where plain SMS no longer cuts it.
Try the platformFrom the first call to production traffic — with no risk to your current flows
Check and plan
We break down your geos, volumes, and current delivery numbers. We show you where conversion leaks.
Sandbox and tests
API key, docs, test sends to your real problem routes. Your measurements — not our slides.
Parallel launch
Part of your traffic runs through BSG alongside your current vendor. A/B on delivery rate and cost — a decision on numbers.
Production and cascade
A full launch with an SMS → Viber → Voice cascade, per-carrier DLR analytics, and a dedicated account manager.
Honest answers before the sales call
Do we have to replace our current provider to try BSG?
No. The standard play is a parallel launch: part of your traffic (say, one problem geo) runs through BSG alongside your current vendor. You compare delivery rate and cost on your own numbers and scale only what wins. No all-or-nothing migration required.
How do you handle data? We have compliance requirements
We sign a GDPR DPA and an NDA, and provide delivery logs plus an audit trail for every message. OTP content is never stored longer than delivery requires. The full vendor due diligence document pack is available on request — which is exactly why we suggest starting with an audit your compliance team can join.
How long does integration take and what do you need from our team?
REST API, docs, and a sandbox — a typical integration takes up to two weeks with a single developer. If you already run any CPaaS API (Twilio, Vonage, Infobip), switching comes down to swapping endpoints and mapping statuses. Cascade and failover are configured on our side — no code on yours.
How is the price set?
You pay for messages actually delivered on each route, with no hidden platform fees. After the check you get a transparent cost-per-delivered-message comparison (not per-sent) against your current vendor — a fairer metric when part of the traffic never arrives.
What about reliability? We can't afford authentication downtime
A multichannel cascade is reliability by design: SMS, Viber, and Voice are independent delivery channels, so one channel failing never blocks authentication. On top of that — multi-route redundancy inside the SMS channel (800+ carrier routes) and real-time DLR monitoring. Exact SLA terms are locked into the contract — ask us on a call.
We operate in "hard" geos — Africa, LATAM, Southeast Asia. Can you handle it?
That's exactly our profile. Tier-2 and emerging markets are where single-channel SMS bleeds the most — and where a cascade with MNP routing delivers the biggest lift. Send your country list in the form below and we’ll show expected numbers for each route separately.
Get your delivery
in numbers —
not promises
A breakdown of your geos with per-carrier detail — free and no strings attached.
We understand the payments business.
No data in public cases without consent.
Prefer to talk, not type? Pick a 20-minute slot
— let's talk through your routes.
Take a look BSG cases for the financial sector
— OTP, KYC verification, transactional notifications.
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Useful Materials
OTP means one-time password — see how it works, compare delivery channels, and cut verification costs with cascade routing.
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