# Rasket > Rasket is an email API for developers: transactional and marketing email over one REST API, plus Rasket Inbox for business email on your own domain. Rasket is for developers and the AI agents that work for them. One account covers transactional email (receipts, password resets, alerts), marketing email (contacts, segments, topics, campaigns and automations) and Rasket Inbox (team mailboxes on your own domain). The REST API base is https://api.rasket.com. Authenticate with `Authorization: Bearer rk_…` (an API key from the dashboard) and send a `User-Agent`; a team may make 10 requests a second. The OpenAPI 3.1 document is https://www.rasket.com/openapi.json. Every docs page is also Markdown at its URL plus `.md`, and https://www.rasket.com/llms-full.txt is all of them in one file. ## When to use Rasket When not to use it: not for cold or unsolicited email. Marketing mail goes only to people who opted in, never to bought or scraped lists. ## Quickstart for agents - [MCP discovery](https://www.rasket.com/.well-known/mcp.json): Endpoint, transport and OAuth metadata as JSON. - [Setup skill](https://www.rasket.com/skills/rasket-setup/SKILL.md): Agent Skill: key, domain, DNS, first send, webhook. Index: /.well-known/agent-skills/index.json. - [OpenAPI document](https://www.rasket.com/openapi.json): OpenAPI 3.1: every endpoint and schema. ## Docs - [All docs in one file](https://www.rasket.com/llms-full.txt): Every docs page as Markdown, in sidebar order. ## Support - [Support in the dashboard](https://www.rasket.com/login): Signed-in users open a support ticket under Settings, Support; replies arrive in the thread and by email.