---
title: "Send the code. Confirm the number."
canonical: "https://bird.com/verify-api/features/sms"
---

# Send the code. Confirm the number.

Deliver a managed passcode by SMS and check the answer in your application. A successful check confirms control of the recipient.

## Un código recibido. Un destinatario confirmado.

Integra la verificación en tu flujo de inicio de sesión. Recoge el código, comprueba la respuesta y ayuda al cliente a continuar.

[Explora la verificación de destinatarios](/docs/guides/verify/sending-verifications#check-the-code)
Registros ilustrativos del producto. Estos controles solo modifican el ejemplo; no se realiza ninguna solicitud ni compra.

## A text delivered. An answer still to check.

Deliver a verification code by text message.

### Resolve an eligible SMS route.

Supply the phone number in international format. Country configuration defines the available channels; per-request channel options can narrow or reorder that plan, but cannot add an unavailable channel.

### Use the managed code message.

Bird generates the passcode and enforces its lifetime and attempt limits. Sender presentation follows the selected identity and the destination’s number or brand-name requirements.

### Check the full recipient identity.

Submit the code with exactly the recipient set used at creation. Read success and reason from the check response, then let your application decide the appropriate account action.

[Explore Verify sms verification →](/docs/guides/verify/overview)

## Keep building with Verify.

Prepare another eligible route and the policy that governs every code attempt.

[Fallback delivery Give an undelivered code another configured route. →](/verify-api/features/orchestration)

[Country controls Choose where and how verification delivery is attempted. →](/docs/guides/verify/countries)

[Code controls Set code lifetimes, attempt limits and resend cooldowns. →](/docs/guides/verify/sending-verifications)

[Explore Verify →](/verify-api)

## Escala sin perder el control.

Organiza equipos en espacios de trabajo, controla el acceso a la API y rastrea cambios en los registros de auditoría.

[Espacios de trabajo](/docs/guides/workspaces)[Roles del equipo](/docs/guides/users-teams-roles)[Autenticación de API](/docs/guides/authentication)
[Explora Enterprise](/enterprise)

## Start with Verify. Build across channels with Bird.

[Get Started](/dashboard/signup?returnTo=%2Fdashboard%2Fw%2Fverify) · [Contact Sales](/demo?product=verify)

[Email](/email-api) · [SMS](/sms-api) · [WhatsApp](/whatsapp-api) · [Apple Messages](/apple-messages-api) · [Voice](/voice-api)



## Related resources

- [Verify phone numbers at signup](/learn/series/verify-phone-numbers-at-signup) (video)
- [Verify your first customer](/docs/get-started/verify-your-first-customer) (docs)
- [What does OTP mean? One-time passwords explained](/explained/verify/what-does-otp-mean) (answer)
- [Build your first integration](/learn/paths/integration) (course)

[Get an implementation brief](/learn/workspace?topic=verify)