# Email aliases > A separate email address for each site, so the site never sees your real address. Mail is forwarded to you, you can reply from the alias, and you can turn it off. Email aliases is a free web page that makes a separate email address for each site, like amberwolf482@alias.utilarium.app. You sign in, press a button, and get an address. Mail to the alias is forwarded to the email address of your account, and the sender sees only the alias. You can reply from the alias, give each alias a label, and turn an alias off to stop its mail. Each account can have 100 aliases. It is not a mailbox: it has no custom domains and no PGP. A mail bigger than 5 MB is not forwarded. The server does not store or log the text, the subject or the files of any mail that it forwards. The exception is an inbox for an AI agent (see the API section below). ## Pages - [Email aliases: a separate email address for each site](https://alias.utilarium.app/) - [Email inboxes for AI agents: API, one-time codes and webhooks](https://alias.utilarium.app/agents/) - [Privacy: what Email aliases stores and what it does not](https://alias.utilarium.app/privacy/) ## API for AI agents An AI agent can have its own receive-only inboxes. A person makes a personal API token on the start page. The agent sends it as "Authorization: Bearer " to https://alias.utilarium.app/v1/. It makes an inbox (an address at alias.utilarium.app), waits for mail with GET /v1/inboxes/{id}/messages?since=