The cold email agent'ssending layer.
Your agent plans and writes. HotHawk is its hands. Send, warm, rotate and work replies as real tools it calls over MCP or REST, at 40,000 a day and more across warmed mailboxes.
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The outbound teams running AI on HotHawk
The basics
What is a cold email AI agent?
A cold email AI agent is an AI that runs outbound on a loop. It plans the campaign, acts by sending and following up, observes the replies and deliverability signals, then decides the next move and goes again.
The planning is the easy half. To act, the agent needs something that can actually send, and send safely. HotHawk is that layer. It exposes send, warm, rotate and reply as real tools your agent calls over the native MCP server or the REST API, with inbox rotation, warmup on real Google and Microsoft inboxes, and headroom for 40,000 a day and more. You build the agent. HotHawk does the sending.
What it does
The tools your agent calls to send.
The agent plans, writes and decides. HotHawk sends, warms, rotates and catches the replies, so the loop actually runs at scale.
The part your agent is missing.
An agent can plan and write all day. It still needs something to actually send. HotHawk is that something: it exposes send, warm, rotate and reply as real tools your agent calls, over MCP or REST. Give the agent a goal and it uses HotHawk to reach it, one tool call at a time.
Sending your agent cannot break.
Hand an agent a raw SMTP connection and it will burn a domain in a week. HotHawk rotates every send across your mailboxes, keeps warmup running on real Google and Microsoft inboxes, and has headroom for 40,000 a day and more. The agent acts, but the guardrails are ours, not its prompt.
It watches, then it decides.
Plan, act, observe, repeat. The agent sends a step, watches for replies and deliverability signals through HotHawk, then decides the next move. Pause a mailbox that looks off, hold a step, warm a bit longer. It closes the loop instead of firing and forgetting.
Replies flow back as events.
The Master Inbox catches every response and its own AI labels it out of the box. Point a webhook at your agent and it hears the moment a positive reply, a bounce or an out of office arrives, then acts on it. The reply half of the loop is where most agents go quiet. This is where yours keeps going.
Try it
See it in action
What you get
What you get
MCP or REST.
Give your agent HotHawk over the native MCP server or the REST API. Same tools: send, warm, rotate, reply.
It sends at real scale.
Your agent pushes 40,000 a day and more across warmed, rotated mailboxes, not a trickle from one connected inbox.
You set the leash.
Let the agent send freely, or make it queue drafts for a human. The protections underneath stay on either way.
Cold email AI agent FAQs
What is a cold email AI agent?
A cold email AI agent is an AI that runs outbound on a loop: it plans the campaign, acts by sending and following up, observes the replies and deliverability signals, then decides the next move. To do the acting part it needs something that can actually send. HotHawk is that layer. The agent calls HotHawk to send, warm, rotate and work replies, over MCP or the REST API.
Is this an AI SDR?
An AI SDR is one thing you can build with an agent. HotHawk is not the SDR, it is the execution layer the SDR runs on. You build and control the agent, choosing how much it can do on its own, and HotHawk handles the sending, deliverability and reply management underneath. You keep the keys.
How does the agent connect to HotHawk?
Two ways. Connect the native MCP server and your agent gets HotHawk as a set of tools it can call in plain language, which is the fastest route for a Claude-based agent. Or use the REST API with a Bearer token and webhooks to wire HotHawk into your own agent framework. Both expose the same actions.
What stops the agent from wrecking my deliverability?
The guardrails live in HotHawk, not the agent’s prompt. Sending rotates across your mailboxes, warmup runs on real Google and Microsoft inboxes, and open and link tracking stay off for everyone. The agent decides what to send, but it cannot turn off the practices that keep your sending healthy.
Do I need to write code?
Not for the MCP route. Connect the server and a Claude-based agent runs HotHawk in plain language. For a custom agent framework you or a developer wire up the REST API, which gives you full control over the loop.
Build with the API
Wire HotHawk into your own agent over REST, with Bearer auth and webhooks. The build guide walks the whole loop.
Read the API docsThe AI cold email hub
See every way to run cold email with AI on HotHawk, from Claude to a custom agent, in one place.
Explore AI cold emailSend cold emails that get delivered. Never miss a positive reply.
Serious deliverability paired with the best reply management in the market.
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