WarmySender for AI agents

WarmySender is an outreach platform with five channels — cold email, email warmup, LinkedIn, Instagram and WhatsApp — plus real-time email verification and a 200M+ B2B lead database. This skill teaches an agent (Claude, ChatGPT, Cursor, Codex, OpenClaw, and Hermes Agent, or any agent that speaks MCP) how to run it through the hosted WarmySender MCP server.

Your agent can run the entire outreach — build, launch and manage cold email, LinkedIn, Instagram and WhatsApp campaigns, verify emails, search and save leads, and tune warmup, all in plain language — while WarmySender's scheduler keeps every account inside safe limits no matter who's driving.

1. Connect first

WarmySender is a hosted MCP server (streamable HTTP) at:

https://warmysender.com/mcp

Sign-in is the default. The client registers itself and the user signs in to WarmySender in the browser — no key to paste. Use the API-key form only for clients that cannot sign in, or when the user prefers a key.