Castby WAYVZ
Fintech

Messaging your customers can rely on.

OTP and transaction alerts run over direct operator connections where we hold them, with bot and velocity filtering. Outside the region, delivery uses vetted partner routes.

The stakes

A missed OTP is a lost login. A late alert is a lost customer.

The challenge

Fintech messaging has no room for delay

A one-time code has to arrive fast, and it has to survive spam filtering, SIM swaps and grey-route delays that generic messaging tools don't plan for. A collections reminder that lands on the wrong channel just gets ignored.

Sender ID rules per market SIM-swap risk Spam filtering Delivery speed
How Cast helps

Direct connections, built for the speed a login screen needs

OTP and 2FA run over direct operator connections where we hold them, or aggregator partners elsewhere, with WhatsApp available as a verified fallback channel. Transaction alerts, KYC verification steps and collections reminders run as journeys, so a message that goes unread can automatically retry on a second channel instead of going unanswered.

OTP & 2FA Transaction alerts KYC verification flows Collections & reminders Bot and velocity filtering Consent and opt-out logged
How it works

From auth event to auditable delivery record.

Connect

Send OTP and alerts through the API, or plug straight into your existing auth and core banking events.

Orchestrate

Build a journey that retries on WhatsApp if an SMS OTP goes unread, and schedule collections reminders around due dates.

Verify & report

Track delivery and read status per message, with a record you can hand to a compliance review.

Talk to us about your compliance requirements.

We'll walk through the routes, retention and controls your review needs to see.