One-time passwords and transactional messages for payment (PSP) and VAS providers: 200+ countries, 800+ operators, an SMS → Viber → Voice cascade with automatic failover. Pick a scenario — from the effective price per delivered message to keeping your subscribers.
One-time passwords and transactional messages for payment (PSP) and VAS providers: 200+ countries, 800+ operators, an SMS → Viber → Voice cascade with automatic failover. Pick a scenario — from the effective price per delivered message to keeping your subscribers.
Five directions where BSG removes OTP delivery losses — from the effective price per delivered message to keeping your subscribers.
The rate-card price ≠ the price per delivered. Calculate the effective cost including delivery rate, retries and paid statuses.
The SMS → Viber → Voice cascade with failover catches every code and keeps authentication conversion independent of any single channel.
Bots mass-request OTPs to “premium” ranges and inflate your bill. Number Verifier filters fraud before sending.
Your OTPs already arrive — but how much stack potential is off? A 60-second health-check and a quarterly delivery review.
Undelivered renewals, dead MSISDNs, silence after month one — that’s ARPU you won’t get. Close the leaks with your existing stack.
Confirm account sign-in and password recovery without friction.
An OTP on every payment — where the cost of an error is highest.
Strong customer authentication per PSD2 and card-scheme requirements.
Renewal reminders and reactivation for VAS subscribers.
The technology that gets the code through — and lets you see every step.

SMS didn’t land — the system delivers the code via Viber, then Voice. Authentication conversion no longer depends on a single operator or route.
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If a route degrades, traffic automatically moves to a backup — in real time, with no manual work and no delivery downtime.
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Number Verifier checks numbers and removes AIT bots and dead ranges before you pay for the SMS. No send — nothing to profit from.
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Delivery rate, retries and statuses per geo and operator. See the real price per delivered — and where it leaks.
Learn moreNo. The standard scenario is a parallel run: send part of your traffic (e.g. one problem geo) through BSG alongside your current vendor, compare delivery rate and cost on your own numbers — and scale only what wins. No all-or-nothing migration.
REST API, docs and a sandbox: a typical integration takes up to two weeks with one developer. If you already work with any CPaaS API (Twilio, Vonage, Infobip), the switch comes down to replacing endpoints and mapping statuses. Cascade and failover are configured on our side.
We sign a GDPR DPA and NDA, and provide delivery logs and an audit trail for every message. OTP content isn’t stored longer than needed for delivery. A full vendor due-diligence pack is available on request.
Number Verifier checks numbers and filters bot traffic and dead ranges before sending — you don’t pay for fraudulent OTPs.
200+ countries via 800+ operators over direct routes, with automatic failover in key geos.