---
title: "WarmInboxes Agents for Claude, ChatGPT and MCP Clients"
description: "Two free WarmInboxes agents for Claude, ChatGPT and any MCP client: the Deliverability Agent finds out why cold email stopped landing, and the Cold Email…"
url: https://warminboxes.com/plugins
breadcrumb: "Home > For AI Agents > Agents"
---
# WarmInboxes agents

Two agents for Claude, ChatGPT and any MCP client, free and with no account. One finds out what is wrong; the other works out what to buy. Each knows when to hand you to the other.

## [WarmInboxes Deliverability Agent](https://warminboxes.com/plugins/deliverability-agent)

For anyone whose cold email results dropped, or who wants to know a domain is ready before it sends.

Server: `https://warminboxes.com/mcp` · [41 tested prompts, capabilities and limits](https://warminboxes.com/plugins/deliverability-agent)

## [WarmInboxes Cold Email Infrastructure Agent](https://warminboxes.com/plugins/cold-email-infrastructure-agent)

For anyone planning a cold email fleet, adding capacity, or deciding between Google, Microsoft 365 and Azure.

Server: `https://warminboxes.com/mcp/infrastructure` · [32 tested prompts, capabilities and limits](https://warminboxes.com/plugins/cold-email-infrastructure-agent)

[Adding one on Claude](https://warminboxes.com/claude-connector) · [on ChatGPT](https://warminboxes.com/chatgpt-plugin) · [every other MCP client](https://warminboxes.com/for-ai)