Countries & regulations

There's no single messaging rule for the whole world: each country sets its own, and that rule often covers more than one channel at once — a single sender registration can work for both SMS and RCS to the same country. This section gathers those per-country specifics. The ones that need more than a note get their own page, and the list grows as we add coverage.

Why rules are per country

Who decides how your sender behaves is each country's carriers and regulators. In practice you'll meet a few patterns that keep coming up:

• Pre-registration — some countries require a sender (and sometimes its URLs) to be registered and approved before it can deliver.
• Sender replaced by a number — in some countries an alphanumeric sender is swapped for a number on delivery; you can keep your brand visible with a brand prefix.
• Restricted sending hours — some countries don't allow promotional messages at night or on certain days.

Countries with their own page

For example, the United States and Canada require a registered toll-free number, and Italy restricts alphanumeric senders. These and other destinations are added as dedicated pages over time.

Where to check requirements for your sender

The requirements that apply to your sender are shown in the panel: open a sender to see which destinations are approved and which need registration, and use Request country to add one. See SMS senders & registration and RCS senders & verification. If a country you need isn't listed, contact support.