Run cold email with Cursor

Yes — Cursor can build, launch and manage your cold email campaigns in WarmySender, all in plain language, through the same 78-tool connection Claude, ChatGPT, Cursor, Codex, OpenClaw, and Hermes Agent share. You ask in Cursor’s chat panel, inside the editor. It never sends a message itself and can never raise a limit: it writes the campaign and hands it to WarmySender’s scheduler, which paces every email, LinkedIn, Instagram and WhatsApp action inside safe limits no matter who is driving. Connecting and disconnecting accounts stays in the app.

Why Cursor for cold email

You talk to Cursor in the chat panel of the editor you already work in, so outreach sits next to the code and files of the project. It connects with the one-click Add to Cursor button, or a small block in .cursor/mcp.json in your project root; sign in when Cursor asks. Cursor suits cold email when the campaign lives next to code — a project that generates the list, a repo where the templates are versioned. The connection sits in .cursor/mcp.json in that project, so it travels with the repo, and you drive the campaign from the chat panel without switching apps.

You talk to it in
Cursor’s chat panel, inside the editor
It connects by
One-click button, or .cursor/mcp.json in the project
Sign-in
Sign in when Cursor asks; no key is written to the file
Good fit for cold email when
Campaigns that live next to the code that builds the list

What Cursor can and cannot do with cold email

Every "can" below stands on a real tool in the WarmySender connection. Every "cannot" is not a setting — there is simply nothing an agent can call that does it.

Can / cannotWhat that means for cold email
CanCreate a multi-step campaign, edit it, and set the sending window and daily limits.
CanStart, pause and resume a campaign — starting only hands it to the scheduler.
CanAdd prospects one at a time or in bulk, update their details, and enroll or unenroll them.
CanWork from your saved email templates instead of writing every email from scratch.
CanRead and add to your suppression list so the wrong people are never contacted.
CanReport on every campaign and explain why nothing went out today.
CanAdd a branded tracking domain and check that it is set up correctly.
CanSet the postal address and opt-out wording used in your email footer.
CannotSend an email itself — it writes the campaign and WarmySender’s scheduler sends at your safe pace.
CannotRaise a daily cap, a warmup stage or a domain ceiling — nothing it can call moves a limit.
CannotConnect or disconnect a mailbox — credentials never pass through an agent.
CannotSwitch off the opt-out in your footer — it can change the style, never remove it.
CannotRead or reply to responses — replies stay in WarmySender’s inbox, with you.

Connect Cursor to WarmySender

Cursor connects with one click from your browser, or one small file in your project — then you drive outreach from the editor you already work in.

Use the Add to Cursor button, or paste this into .cursor/mcp.json in your project root and sign in when Cursor asks.

File: .cursor/mcp.json

{
  "mcpServers": {
    "warmysender": {
      "url": "https://warmysender.com/mcp"
    }
  }
}

Add WarmySender to Cursor

Prefer a key? Create one under Settings › API Keys and choose exactly which permissions it carries, including read-only. With a key, the Cursor route is: Use the Add to Cursor button, or paste this into .cursor/mcp.json in your project root.

Both routes reach the same workspace and stay inside the same safe limits. Every agent's steps live on the AI Agents hub.

How a session goes in Cursor

  1. Open Cursor. Open the project that holds .cursor/mcp.json and open Cursor’s chat panel.
  2. Say what you want. In Cursor’s chat panel, inside the editor: "Create a three-step campaign called "Agency founders" for this list, weekdays only, from my two warmed mailboxes, then start it."
  3. Check back whenever you like. From the same chat panel, ask: "Why did the "Q4 partners" campaign send nothing yesterday?"
  4. The scheduler does the sending. Cursor has only written the plan. WarmySender’s scheduler paces every email inside safe limits and the gradual ramp, and keeps going after the editor is closed.

Things to say to Cursor

Safe by design — no matter who's driving

Cursor never sends a message itself and can never raise a limit. Creating or launching a campaign only writes it and hands it to WarmySender's scheduler, which paces every email, LinkedIn, Instagram and WhatsApp action inside safe limits and a gradual ramp — the same protections that apply when a human clicks the buttons. Connecting and disconnecting accounts stays in the app. Account safety always wins.

Frequently asked questions

Can Cursor run my cold email campaigns for me?

Yes. Connect Cursor to WarmySender and ask in plain language, in Cursor’s chat panel, inside the editor — it can build, launch and manage your cold email campaigns. It never sends a message itself and can never raise a limit: it writes the campaign and hands it to WarmySender’s scheduler, which paces every email, LinkedIn, Instagram and WhatsApp action inside safe limits no matter who is driving. Connecting and disconnecting accounts stays in the app.

How do I connect Cursor to WarmySender?

Cursor connects with one click from your browser, or one small file in your project — then you drive outreach from the editor you already work in. Use the Add to Cursor button, or paste this into .cursor/mcp.json in your project root and sign in when Cursor asks. The block for .cursor/mcp.json is: { "mcpServers": { "warmysender": { "url": "https://warmysender.com/mcp" } } } — the server address is https://warmysender.com/mcp. The steps are on this page under "Connect Cursor", and the full install hub for every agent is at /ai-agents.

Can Cursor raise my cold email limits?

No. Nothing an agent can call moves a limit — not a mailbox’s daily cap, your domain’s ceiling or the pace across the sending window. Cursor can read where you are against a limit and tell you when a pause lifts; WarmySender’s scheduler decides what actually goes out.

Can Cursor connect my mailbox?

No. Connecting and disconnecting accounts stays in the app on purpose — a credential should never pass through an agent or a chat log. Connect the mailbox once in WarmySender; after that Cursor can use it.

What happens if Cursor enrolls too many people at once?

Nothing goes out in a burst. Starting a campaign only queues it, and WarmySender’s scheduler drains that queue at your normal daily pace across your sending window, inside each mailbox’s limit and your domain’s ceiling. Pausing is one sentence and is never blocked, and everything the agent built is a normal campaign you can open, edit or delete.

What does the Add to Cursor button do for cold email?

It opens Cursor and offers to add the WarmySender server — the same result as pasting the block on this page into .cursor/mcp.json (the server address is https://warmysender.com/mcp). Accept, sign in when Cursor asks, and the cold email tools are available in the chat panel.

Should the WarmySender connection be per project or global in Cursor?

The block on this page goes in .cursor/mcp.json in the project root, so it travels with that project. Cursor also supports a global configuration file; either way the sign-in is the same and the safe limits are identical.

Does the Add to Cursor button use a sign-in or a key?

A sign-in: Cursor asks you to sign in to WarmySender the first time it reaches the server, so no key is written to .cursor/mcp.json. Prefer a key? Create one under Settings › API Keys and use the key form on the AI Agents hub.

Last updated: 2026-09-09