Delivery rate
99%
Failure rate
1.18%
SMS API for developers
Send order alerts, appointment reminders, and marketing campaigns that reach customers on time. Handle two-way replies across global carriers with Bird SDKs, CLI, and MCP.
Hi Maya, your order arrives today, 14:00-16:00. Will you be home?
Could we do tomorrow?
Of course. Morning or afternoon?
Trusted by engineering and product teams
shipping at global scale.
From prompt to delivered.
Send a confirmation text or reminder and verify its carrier delivery receipt as soon as it arrives. If messages start failing, break down recent delivery rates by carrier to see where traffic is dropping.
sms_send
Acceptedsms_get
Deliveredsms_stats_summary
sms_stats_by_carrier
Match your SMS sender to
each destination country.
Send from your brand name where supported, or use local, toll-free, and 10DLC numbers when a country requires them. See clearly which countries are ready to send, under review, or waiting on registration before you launch.
United States
Use a number
Netherlands
Ready
India
United States
Make every
character count.
A single curly quote can silently split one text into two billable segments. Preview the final message length with customer data filled in, and let smart encoding replace hidden characters so you avoid paying for extra segments.
Use Smart encoding
Your order’'s on its way…... We’'ll deliver tomorrow.
Delivery window: “"10:00–-12:00”".
Need another time? Reply “"CHANGE”" —- we’'ll help.
Receive customer replies and
route them into your app.
Let customers confirm appointments, reschedule deliveries, or reply to support right from their messages app. Route incoming texts straight into your application and reply from the same number.
Harbor
Hi Maya, your appointment is tomorrow at 10:00. Reply YES to confirm.
YES
You’re confirmed, Maya. See you tomorrow at 10:00.
Honor the next STOP.
When a customer replies STOP, Bird automatically blocks future texts to that number in supported countries so you stay compliant without building your own suppression logic. You can also enforce opt-outs across your entire workspace.
Opted out+14155550100Stop keyword
Opted out+14155550123Stop keyword
Opted out+14155550147Stop keyword
Opted out+14155550162Stop keyword
Opted out+14155550178Stop keyword
Every message. A clearer picture.
Track delivery rates in real time across countries and mobile networks. When messages fail, see right away whether the issue is a specific carrier, an unreachable phone, or an invalid number.
Customer story
Built for the next market.
Airwallex expanded SMS into 30 new countries in two months with Bird, bringing its authentication messages to more customers.
Read the customer story30new countries in two months
Catch integration issues early and ship with confidence.
Simulate failure paths in the sandbox, verify signed webhooks, and retry timed-out requests without sending duplicates.
{ "method": "POST", "url": "/v1/sms/messages", "body": { "to": "+14155550100", "from": "+15557654321", "text": "Hi Maya, your appointment at Harbor is tomorrow at 10:00. Reply YES to confirm.", "category": "transactional" }}
$ bird sms send --body-file reminder.json --dry-run$ bird sms send --body-file reminder.json --dry-run▏
{ "method": "POST", "url": "/v1/sms/messages", "body": { "to": "+14155550100", "from": "+15557654321", "text": "Hi Maya, your appointment at Harbor is tomorrow at 10:00. Reply YES to confirm.", "category": "transactional" }}
$ bird sms send --body-file reminder.json --dry-run$ ▏
Scale without losing control.
Separate production and sandbox traffic into dedicated workspaces, scope API keys to the exact channels each service or agent needs, and track permission changes in the audit log.
Go further.
With SMS API.
Transactional alerts, two-way conversations, and global sender compliance in one place.
Sending API
Send order updates, reminders, and alerts with real-time carrier delivery receipts.
Numbers
Text from your brand name, local numbers, toll-free numbers, or short codes.
Destinations
Check country rules, supported sender types, and registration requirements before launching.
Two-way messaging
Receive customer replies and let people confirm, reschedule, or ask for help by text.
Routing
Deliver messages reliably across global mobile networks with direct carrier connections.
Marketing
Send promotions, product drops, and announcements to opted-in customer segments.
Templates
Personalize reusable templates and preview character and segment counts before sending.
Compliance
Automate STOP opt-outs and keep country registrations organized in one workspace.
10DLC registration
Register your US brand and campaigns to protect throughput and avoid carrier filtering.
Before your
first message.
Can I send from my business name?
Yes, in most countries outside North America you can send one-way texts displaying your brand name as the sender. Some countries require quick pre-registration first. If you need customers to reply, or if you are texting the US or Canada, use a local, toll-free, or short-code number instead.
What determines the cost of an SMS?
Pricing depends on the destination country, the mobile carrier, and how many segments your message uses. Standard texts fit up to 160 characters per segment, while messages with emojis or special characters fit up to 70. Smart encoding helps prevent hidden characters from splitting a message into extra billable segments.
Does accepted mean delivered?
No. Accepted means Bird received your request and queued the text for the mobile network. Once the recipient’s carrier delivers the message to their phone, Bird sends you a delivery event confirming whether it arrived or failed.
How do replies and opt-outs reach my application?
When a customer texts your number, Bird forwards the message straight to your webhook so your app can respond. When someone replies STOP in a supported country, Bird automatically blocks future texts to that number so you stay compliant.
Should I use SMS API or Verify for login codes?
Use the SMS API if your own backend generates, stores, and checks the one-time code. Use Verify if you want Bird to generate the code, check the user’s input, and handle retries or channel fallback across SMS, WhatsApp, voice, and email.
Start with one channel and expand as you grow.
Add new channels, verification, and connectivity in the same workspace, using the same API keys, webhooks, and SDKs.
Deliver transactional emails, run campaigns, and handle replies.
SMS
Send global text alerts, campaigns, and two-way replies.
Send approved templates, rich media, and two-way support chats.
Apple Messages
Support customers, schedule appointments, and take Apple Pay in Messages.
Voice
Place programmable calls, run IVR menus, and connect SIP trunks.
Verify
Confirm signups and logins with OTPs and automatic channel fallback.
Lookup
Validate phone numbers and emails before you pay to send.
Mailbox
Provision dedicated email inboxes for AI agents and workflows.
eSIM
Issue travel data plans and mobile connectivity in your app.
Realtime
Stream live updates, chat, and presence over managed WebSockets.