Bird

Bird is a developer communications platform for sending email, SMS, WhatsApp, and voice from one API and contract, with SDKs, CLI, and MCP support.

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Communications infrastructure for messaging and voice

Bird is a communications infrastructure platform for teams building software and AI agents. Its homepage presents email, SMS, WhatsApp, and voice behind one API and one contract, with docs and setup paths aimed at developers and agentic workflows.

The product page and pricing page focus first on email, then show the broader platform around it. Bird describes volume-based pricing for email, a free starting tier, and a shared primitives layer that includes typed APIs, SDKs, CLI tooling, MCP support, and real-time webhooks.

Core capabilities

Multi-channel communications API

Send across email, SMS, WhatsApp, and voice from a shared platform with one API and one contract. The site frames these channels as a single communications layer rather than separate point products.

Multiple developer surfaces

Use Bird from TypeScript, Python, or Go, or call it through REST, curl, and the CLI. The homepage also mentions MCP support for agent-driven workflows.

Email delivery tooling

Email sending includes HTML and plain text support, React Email support, direct sending IPs, managed warm-up, ISP-aware routing, and SPF/DKIM/DMARC handling.

SMS routing and compliance support

SMS messaging includes Tier-1 carrier coverage, 190+ countries, A2P 10DLC support, alpha sender IDs, DLT entity registration, smart routing, and voice OTP fallback.

Programmable voice workflows

Voice supports PSTN and SIP, outbound and inbound calls, declarative flow JSON for IVR, recording, live transcription, and streaming TTS in 30+ languages.

Operational controls for apps

The platform includes test mode, real-time webhooks, HMAC-signed and replay-protected events, idempotency keys, cursor-based pagination, and scoped API keys.

Common ways teams use Bird

Product and lifecycle email
Build a transactional email flow with HTML or plain text content, React Email templates, and delivery visibility through webhooks and audit logs.
Authentication and verification
Send OTP or account verification texts with carrier-aware routing, compliance filing support, and fallback to voice when SMS delivery degrades.
Programmable voice experiences
Run inbound or outbound voice flows with PSTN or SIP, IVR-style declarative steps, recording, and live transcription.
WhatsApp messaging workflows
Support customer conversations over WhatsApp with templates, interactive replies, delivery and read receipts, and inbound webhooks.
Agent-assisted operations
Let agents and developers connect through MCP, CLI setup, or SDKs so messaging actions can be triggered from automated workflows.

Pros and Cons

Pros

Covers multiple customer communication channels in one product surface.
Offers documented developer paths across SDKs, REST, CLI, and MCP.
Email pricing starts free and is based on volume rather than seats.
Includes operational features such as webhooks, idempotency, and scoped API keys.
Shows concrete channel-specific capabilities for email, SMS, and voice on the homepage and pricing page.

Cons

The collected sources show several features as being upgraded or coming soon, including parts of SMS, voice, and WhatsApp.
The sources do not provide a complete, unified list of all integrations, limits, or channel-specific capabilities across the platform.

FAQ

What channels does Bird support?

Bird positions one platform for email, SMS, WhatsApp, and voice. The homepage and docs also point to a setup flow for agents, including an MCP server and CLI-based onboarding.

How is Bird priced for email?

The pricing page shows email plans start free with 1,000 emails per month, then move to Startup, Growth, and Enterprise as volume increases. Pricing is volume-based rather than per-seat.

How do developers get started with Bird?

The docs page highlights quickstarts for TypeScript, Python, and Go, plus CLI-based setup and use cases for sending email or setting up an agent. The homepage also mentions REST, curl, SDKs, and MCP.

Can Bird be used with AI agents and automation tools?

The homepage and product pages describe sending email, SMS, WhatsApp, and voice from a typed API. The collected sources do not show a complete list of every product-specific integration or limit.

Which agent tools does Bird mention?

Yes. The site explicitly mentions Claude Code, Cursor, Codex, Windsurf, Copilot, and any MCP client as supported setup paths for agent workflows.

Quick Facts

Category: Developer communications platform
Primary channels: Email, SMS, WhatsApp, voice
Developer access: TypeScript, Python, Go, REST, curl, CLI, MCP
Pricing model: Volume-based email pricing with a free starting tier
Website: bird.com
Notable workflow: Send messages and route events from one shared API layer