# How can we help?

DomainSend Help Center. Setup, sending, routing, AI, privacy, and troubleshooting.

Start here: [DomainSend setup guide](/help/setup-guide/index.md)

HTML: https://domainsend.app/help/

[Cloudflare Email Routing inbox](/cloudflare-email-routing-inbox/index.md)

## Getting started

- [DomainSend setup guide](/help/setup-guide/index.md): From free signup to a working inbox in five steps — open the app, sign in, and connect it to Cloudflare.
- [Using multiple accounts](/help/multiple-accounts/index.md): Run several mailboxes side by side — each account connects to its own Worker, with its own aliases and a default for sending.

## Domains & mail flow

- [Add a sending domain](/help/add-a-sending-domain/index.md): Add your root domain in Cloudflare, then add it in DomainSend. The app writes DNS and routes every address on that domain, including agent mailboxes.
- [Connect Cloudflare Email Routing](/help/connect-cloudflare-email-routing/index.md): Route one exact address by hand. Adding the root domain in Sending domains creates the catch-all for you.
- [Sending from your domain](/help/sending-from-your-domain/index.md): Send to anyone — not just verified addresses — by connecting Resend so outbound mail leaves through a reliable provider.
- [Inbox vs spam tests](/help/inbox-placement/index.md): Embed unique signals in new outreach and probe Gmail, Outlook, and Yahoo to see whether mail is hitting the inbox or the spam folder.

## Inbox & productivity

- [Search your mail](/help/search-your-mail/index.md): Search all your inboxes from the top of the app, including Gmail-style operators and full-text body search.
- [Labels & filter rules](/help/labels-and-rules/index.md): Color-code your mail with labels, then automate sorting with rules that run as soon as a message arrives.
- [Compose tools](/help/compose-tools/index.md): Send Later, Undo Send, and reusable templates — compose with timing, a safety net, and less retyping.
- [Contacts](/help/contacts/index.md): Browse people DomainSend already knows from your senders, recipients, and sending addresses — then compose in one click.

## AI & automation

- [AI assist](/help/ai-assist/index.md): Polish drafts, summarize threads, and write in your voice — with DomainSend’s managed AI or your own API key.
- [Webhooks](/help/webhooks/index.md): Push inbound, outbound, and failure events to your own URL — with secrets, tests, and delivery history.
- [Connect an AI bot with MCP](/help/mcp-bots/index.md): Give Cursor, Claude, ChatGPT, Grok, or a custom agent a key so it can draft, send, and read mail in your DomainSend inbox.
- [AI triage](/help/ai-triage/index.md): Structured labels on incoming mail, available in search.

## Security & privacy

- [Privacy & tracking protection](/help/privacy-and-tracking/index.md): Opening an email shouldn't tell the sender where you are or when you read it. Here's what DomainSend blocks, and how to tune it.
- [DomainSend Shield](/help/flaremail-shield/index.md): Privacy plus inbound mail evidence — authentication, links, and conservative spam routing, without claiming we stop all phishing.
- [Agent Shield and quarantine](/help/agent-shield/index.md): Keep suspicious mail away from connected agents.

## Admin & troubleshooting

- [Admin settings](/help/admin-settings/index.md): See how AI agents and crawlers discover DomainSend — keywords, agents, and recent hits on domainsend.app.
- [Agent Keys and permissions](/help/agent-keys/index.md): Give an agent one mailbox, not the whole account.
- [Developer API](/help/developer-api/index.md): The stable HTTP surface for inboxes, messages, search, and sending.
- [Instant agent inboxes](/help/agent-inboxes/index.md): An address on the platform domain, without your DNS.
- [Setup Doctor](/help/setup-doctor/index.md): One-click health check for the Worker, D1, R2, outbound sending, and Cloudflare credentials.
- [Troubleshooting](/help/troubleshooting/index.md): Quick fixes for the handful of things that can go wrong: a blank window, “Not connected”, an expired session, or missing mail.