# Documentation > Set up a company inbox for people, products, and agents—without adopting the rest of an office suite. Startup Mail gives an address on your own domain a web inbox, optional forwarding, team access, and a developer interface. Incoming and outgoing messages stay in the same threads no matter which interface handles them. > **The short version** > > You need a domain you control and access to its DNS settings. You do not need to move your > website, change registrars, or buy a calendar and documents suite. ## Choose a path ### [Set up an inbox](https://startupmail.dev/docs/quickstart.md) Connect a domain and receive your first message. ### [Build with the API](https://startupmail.dev/docs/api-overview.md) Read, send, reply, and react to mail from code. ### [Forward mail](https://startupmail.dev/docs/forwarding.md) Keep Gmail or Outlook as your daily inbox. ### [Connect an agent](https://startupmail.dev/docs/mcp.md) Expose scoped mailbox tools over MCP. ## The product model Everything starts with a **workspace**. A workspace owns domains, mailboxes, teammates, API keys, webhooks, billing, and usage. A verified domain can have one or more mailboxes such as `hello@tiny.studio` or `founder@tiny.studio`. Mailboxes are either **shared** with the workspace or **private** to an owner and explicitly invited people. Humans use the web inbox or forwarding. Software uses the REST API, TypeScript SDK, signed webhooks, or MCP. All of those paths respect the same mailbox permissions. ## What Startup Mail is for Startup Mail is for direct conversations and transactional email people requested or reasonably expect: support replies, receipts, account alerts, booking confirmations, and agent-assisted workflows. It is not a newsletter, campaign, drip sequence, or cold-outreach product. Read the [acceptable use policy](https://startupmail.dev/acceptable-use) before sending from a new workspace. ## Product boundaries - No calendar, documents, meetings, or team chat. - No IMAP, POP, Exchange, or general SMTP account. - Forwarding does not synchronize folders, read state, or labels. - No marketing lists, audience management, or bulk campaigns. - DNS changes can take time to propagate outside Startup Mail.