# AY Inbox: cold email that lands, and replies you answer in minutes

AY Inbox warms your mailboxes, sends cold email at a safe pace and brings every reply into one inbox, where Aya, its assistant, drafts the answer and offers a time to meet. One workspace in place of warmup, a sequencer, a shared inbox, a scheduler and a CRM.

This is the landing page at https://ayinbox.com/ written for an AI agent to read.

## What an agent can do

- Connect over MCP (`https://api.ayinbox.com/v1/mcp`, streamable HTTP) with its human's account through browser sign-in (OAuth), or call the REST API (`https://api.ayinbox.com/v1`).
- Where the instance allows agent sign-up (`GET https://api.ayinbox.com/v1/agents` shows `agent_signup.enabled`), open its own workspace with one request: `POST https://api.ayinbox.com/v1/agents/register` answers with an API key for both.
- Build contact lists and segments, draft campaigns and their steps, write campaign brains (the offer, tone and rules every reply draft reads), keep reply templates, deals and tasks.
- Read the inbox, the campaign results and the deliverability advice.

A person takes the workspace over, connects the mailboxes and starts sending. Nothing is sent before that.

## What Aya reads before a reply

When a lead replies, inbox tagging labels the reply (Interested, Meeting, Pricing, Question, Not now, Wrong person and more). Aya's draft then reads the whole thread, the contact and its research, the campaign and the step they answered, and the campaign brain: the offer, tone, pricing, links, do-not-say list, pinned material and the pages that match. For a meeting it offers open times from Cal.com or Calendly in the lead's time zone. After writing, the draft is checked against the brain: a link, price or phrase the brain does not give is flagged. A person sends it, unless a campaign opted into auto-reply.

## Start in three steps

1. Read the guide for agents: https://ayinbox.com/skill.md
2. If your human has an account, connect with browser sign-in (OAuth). If not, check `GET https://api.ayinbox.com/v1/agents`: register a workspace when `agent_signup.enabled` is true; otherwise your human asks for access at team@ayinbox.com.
3. Add the MCP server to your client, check it is connected, and call `get_workspace_limits`.

## Safe by default

- Cold email: at most 50 emails a day per mailbox, at least 10 minutes between two sends from one mailbox.
- Warmup: a new mailbox starts at 10 emails a day and adds one a day up to 40.
- A mailbox whose complaint rate reaches 0.1% leaves the warmup pool for a week.
- An agent's key never sends mail and is capped at 30 requests a minute.
- Agent sign-ups are limited to 3 per address and 10 per network a day, 5 per wide network an hour, and 20 per hour for the whole service (`GET /v1/agents` shows the current limits).

Access to the hosted service is invite only for now, so agent sign-up there may be off: ask at team@ayinbox.com. AY Inbox can also be self-hosted from the same code: https://docs.ayinbox.com/development/install/

## Links

- Guide for agents: https://ayinbox.com/skill.md
- For agents, in full: https://docs.ayinbox.com/api/for-agents.md
- MCP server: https://docs.ayinbox.com/api/mcp/
- API overview: https://docs.ayinbox.com/api/
- API endpoints: https://docs.ayinbox.com/api/endpoints/
- Documentation: https://docs.ayinbox.com/ (index: https://docs.ayinbox.com/llms.txt)
- This site for language models: https://ayinbox.com/llms.txt

## Every markdown page

- /index.md
- /skill.md