# Guides

Guides explain how Bird works and how to build on it: the platform concepts that apply across every channel, plus a deep dive into each channel you send on.

Start with the **platform guides** if you're wiring up Bird itself: [Authentication](/docs/guides/authentication), how [Users, teams & roles](/docs/guides/users-teams-roles) and [Workspaces](/docs/guides/workspaces) fit together, and [Billing & usage](/docs/guides/billing-and-usage). The **API mechanics** every integration leans on live here too: [Webhooks & events](/docs/guides/webhooks), [Idempotency](/docs/guides/idempotency), [Errors](/docs/guides/errors), and [Rate limits](/docs/guides/rate-limits). Two cross-channel guides complete the platform layer: [Deliverability](/docs/guides/deliverability) covers the sender-reputation model, and [Abuse & compliance](/docs/guides/abuse-and-compliance) covers how Bird keeps shared sending infrastructure healthy.

Then go channel-deep. The [Email guide](/docs/guides/email/overview) covers sending, domains and authentication, dedicated IPs, tracking, suppressions, and deliverability. The [SMS guide](/docs/guides/sms/overview) covers free-form and template sends, the message log, and delivery events. The [WhatsApp guide](/docs/guides/whatsapp/overview) covers template messaging, phone-number setup, and metrics. The [Verify guide](/docs/guides/verify/overview) covers one-time passcodes over email, SMS, and WhatsApp: send-and-check, country configuration, and sender branding.

New to Bird? The [quickstart](/docs/get-started/send-your-first-email) takes you from an API key to a delivered email; come back here for the why behind each piece.