# United States

What you need to send to United States on each channel: what is asked for, who files it, how long it takes and what happens if your sender isn't approved.

**Language:** en
**Audience:** platform
**Translation key:** platform.channels.countries.united-states
**Search keywords:** United States registration, send sms to United States, United States requirements, United States rcs, sender United States, United States, US, +1
**Docs index (every page):** https://docs.instasent.com/llms.txt
**This zone's index:** https://docs.instasent.com/platform/en/llms.txt
**This page:** https://docs.instasent.com/platform/en/channels/countries/united-states/ (HTML) · https://docs.instasent.com/platform/en/channels/countries/united-states.md (Markdown)
**Other language (es):** https://docs.instasent.com/platform/es/channels/countries/united-states.md

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    GENERATED FILE — DO NOT EDIT.

    Every edit here is overwritten by the next build, without warning.

    To change the facts block:  content/data/countries/<iso>.yaml
    To change the prose:        content/data/countries/prose/<iso>.en.mdx
    Then run:                   pnpm data:pages

    The authoring contract is docs/AUTHORING-COUNTRIES.md.
  ───────────────────────────────────────────────────────────────────────── */}

## What this country needs

### SMS

- **Your sender** — An alphanumeric sender is not accepted on its own here: it has to be registered first.
- Registration required before sending.
- Operators here restrict links inside an SMS. If your campaign carries one, check with us before a large send.
- The step-by-step for this country isn't written up yet. We tell you exactly what is needed while reviewing your registration.
- **Without an approved registration** — Messages still go out and are still billed, but delivery is best-effort: the operator may change your sender or filter the message.

### RCS

- **What they ask for** — Authorisation letter
- **Who acts** — You sign the paperwork and return it to us.
- **Have this ready** — The attestation documents the operator asks for in your use case, signed
- **Without an approved registration** — Nothing is sent to this country until the registration is approved.

Operators may require **additional declarations or attestation documents** depending on the
agent's use case.

Where that applies, we provide the current template, the agent identifier and the technical
details needed. Return **only the paperwork requested**, completed and signed.

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This is one page of the Instasent documentation. For the complete machine-readable index of every guide and API reference, fetch https://docs.instasent.com/llms.txt — start there for full context.