# MailKaka > Familiar transactional email API and custom-domain team mailboxes, built on India (Mumbai-region) infrastructure. Base URL: https://www.mailkaka.in/api. Auth: `Authorization: Bearer mk_...`. ## Docs - [Full API reference (markdown)](https://www.mailkaka.in/docs.md): base URL, auth, send request/response fields, webhook events and signing, error codes, and a copy-pasteable integration-migration prompt for AI coding agents. - [Full API reference (human page)](https://www.mailkaka.in/docs) ## Notes for AI agents - The send endpoint's `from` field accepts both a bare email address and `"Name "`. - Batch sends are available at `POST /emails/batch`, with 1-100 messages per request. - Webhook events are limited to `sent`, `delivered`, `bounced`, `complained` -- there is no open/click tracking and no inbound-email webhook. - Validate a key without sending mail via `GET https://www.mailkaka.in/api/api-keys/validate`.