Clear carrier checks and honor customer opt-outs.

Send alerts, verification codes, and marketing texts across the US and international markets without getting blocked by carrier filters. Bird guides you through US 10DLC, toll-free verification, and country-by-country alphanumeric sender registration, and handles supported STOP, HELP, and START keywords automatically so opted-out contacts stay suppressed.

Get StartedContact Sales

The Bird SMS platform brings carrier registrations, destination allowlists, and subscriber opt-outs into the same workflow you use to send texts. Before a campaign launches, your team can confirm that a phone number or alphanumeric sender is approved for each target country, enable the destinations you serve, and verify that opted-out contacts stay suppressed.

Which regime applies to me?

Your sender registration depends on two things: where your recipients live and what kind of sender appears on their phone. Local 10-digit numbers in the US require A2P 10DLC, US toll-free numbers use toll-free verification, and branded alphanumeric senders need country-level registration. Subscriber consent and opt-out keywords run alongside those sender checks.

RegimeWhat it coversWhere it applies
A2P 10DLCBrand and campaign vetting so US local numbers earn approved carrier throughputUnited States (10-digit long codes)
Opt-out and keywordsAutomatic STOP, HELP, and START replies with sender-and-subscriber suppressionSupported two-way countries (plus API and workspace suppressions)
Sender-ID registrationPre-registering branded alphanumeric sender names so carriers deliver them without filtering or rewritingCountries that require alphanumeric pre-registration

Track carrier approvals and pre-send checks before your campaign goes live.

Instead of guessing why a new sender is being filtered, you can file 10DLC campaigns, toll-free verifications, and country sender IDs in Bird and watch each registration move from carrier review to approved. Pair approved senders with destination allowlists and live suppression checks so you launch traffic into enabled markets and keep opted-out subscribers suppressed.

Compliance, by regime

Explore how Bird handles US carrier vetting, international sender pre-registration, and automatic opt-out enforcement so you can prepare the right setup for your markets.

A2P 10DLCRegister your brand and messaging campaigns with US carriers, attach local 10-digit numbers, and query approval status from the API before sending.Opt-out and keywordsReply to STOP, HELP, and START automatically in supported countries, block repeat sends to opted-out numbers, and sync suppressions with your app.Sender-ID registrationCheck country-by-country rules for branded alphanumeric senders, submit required pre-registrations, and track carrier approval so your brand name delivers intact.

Questions about registration and sending

Which registration applies to my sender?
A US long code uses 10DLC for application-to-person messaging. Toll-free messaging has a separate verification program. Other country registrations depend on the sender and destination. Read the requirements for the sender you plan to use.
Does registration replace customer consent?
No. Sender registration, customer permission and current opt-out status are separate checks. Preparing an approved sender does not grant permission to message every contact.
How do I know the sender is ready?
Read its country requirements, registration status and whether the destination is enabled. Complete the next actions Bird reports before launching the traffic.

The rest of the SMS platform

Pair compliant senders with global delivery, two-way replies, and real-time analytics from a single API.

SendingSend transactional alerts and batch campaigns with automatic segment handling and idempotent retries.NumbersProvision local long codes, toll-free numbers, short codes, and branded alphanumeric sender IDs.Two-wayReceive customer replies and route inbound texts straight into your app or AI agent with signed webhooks.RoutingControl which countries your workspace can text and trace carrier handoff for each message.AnalyticsTrack real-time delivery rates, carrier error codes, and time-to-delivery across destinations.SMS API overviewSee how sending, numbers, two-way messaging, compliance, routing, and analytics fit together.SMS resource libraryBrowse developer guides, compliance explainers, and interactive tools like the segment calculator.

Scale without
losing control.

Organize teams in workspaces, control API access, and trace changes through audit logs.

WorkspacesTeam rolesAPI authentication
Explore Enterprise

Start with SMS.
Build across channels with Bird.

Get StartedContact Sales

Start building with Bird in minutes.

Get StartedContact Sales