> ## Documentation Index
> Fetch the complete documentation index at: https://docs.12m.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# What inboxbase.ai is

> Managed email infrastructure for outbound, exposed through a single API.

inboxbase.ai runs the messy half of cold-outbound email: domain provisioning,
mailbox warmup, rotation across a pool, threading, deliverability monitoring.
You send, reply, and read threads through one API. We run everything below
the API line.

If you've ever built outbound on top of raw Gmail or SES, you know the work
that goes underneath: provisioning new domains every quarter, warming up
mailboxes for weeks before they can carry real volume, rotating across a
pool so no single mailbox burns its reputation, stitching replies back to
the original thread when the next send comes from a different mailbox.
12m runs that as a service. You get a stable handle, an API, and a
webhook that fires when someone replies.

## Three nouns

You'll meet three things in the API. They're enough to model anything we
support.

<CardGroup cols={3}>
  <Card title="Identity" icon="user" href="/concepts/identities">
    Your unified send/receive identity. One handle, a pool of warmed
    mailboxes underneath that we rotate across.
  </Card>

  <Card title="Conversation" icon="messages" href="/concepts/conversations">
    A thread between an identity and an external recipient. Replies stitch
    in by Message-ID; we track ownership across rotation.
  </Card>

  <Card title="Event" icon="bolt" href="/concepts/events">
    Something happened — sent, replied, no-reply timer fired. Pull or
    push, your choice. Same monotonic seq either way.
  </Card>
</CardGroup>

## Pick a starting point

<CardGroup cols={2}>
  <Card title="Send your first email" icon="paper-plane" href="/quickstart">
    Sign up, mint a key, send a message, watch the event land. About
    sixty seconds.
  </Card>

  <Card title="Build a sequencer" icon="diagram-project" href="/guides/sequencer">
    Multi-step cold outbound. We handle threading and the no-reply
    timer; your code owns the campaign state.
  </Card>

  <Card title="Live thread list" icon="bars-staggered" href="/guides/live-thread-list">
    Combine the conversations endpoint with the events stream to render
    an inbox UI that updates in real time.
  </Card>

  <Card title="API reference" icon="code" href="/api-reference/introduction">
    Endpoint specs, request and response shapes, error codes.
  </Card>
</CardGroup>

## What we don't do

We don't ship a campaign UI, a lead-list editor, or a built-in sequence
builder. Those are the parts every team wants to brand and iterate on
themselves; we ship the parts nobody wants to own. If you're looking for
"Mailchimp but with API access," 12m isn't that. If you're building the
sender for an AI agent, a CRM, a sequencer, or a transactional product
where deliverability matters and you'd rather not babysit warmup
schedules — keep reading.