Integrations

Cursor

Give your Cursor agent the full Mailgun toolkit. Check sending health, investigate bounces, verify DNS, and preflight campaigns without leaving your editor
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Overview

The Mailgun plugin turns your Cursor agent into an email operator. Install it from the Cursor Marketplace, connect your Mailgun API key, and ask in plain language. Your agent pulls metrics, logs, bounce data, and DNS status across Send, Validate, Optimize, and Inspect, then hands you the evidence to act on. 

  • One-command install from the Cursor Marketplace. No manual MCP configuration. 
  • 15 Skills for outcome-level asks, like sending health checks, bounce investigations, and campaign preflights 
  • The full email lifecycle in one plugin: Send, Validate, Optimize, and Inspect 
  • Safe by default, with a built-in Mailgun operational safety rule and tool scoping you control 

Official marketplace partner

Trusted infrastructure for the agentic era

Sinch, Mailgun’s parent company, is an inaugural Marketplace Launch Partner in the SpaceX Super Intelligence Partner Network, alongside NVIDIA, Snowflake, and Databricks.

Read the announcement
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Use Cases

Popular ways to use Cursor with Mailgun

Find out why bounces spiked

Your bounce rate jumped and you don’t know why. Ask your agent. It pulls metrics, logs, bounce classification, and suppression data, then explains what changed so you can fix it fast.

Preflight a campaign before it ships

Before a bulk send, ask your agent to run a campaign preflight. It reviews sender readiness, recipients, suppressions, and templates, so problems surface before your subscribers see them.

Verify DNS without leaving your code

Setting up a new sending domain? Ask your agent to verify your Mailgun DNS records and audit domain health, tracking, and recent delivery risk. No dashboard, no copy-paste.

Validate addresses before they hit your list

Building a signup flow or importing a list? Your agent checks single addresses and sampled lists with Mailgun Validate before signup, import, or your next campaign.

How To Enable The Integration

Set up the Cursor integration for Mailgun in minutes



  • Step 1: Get your Mailgun API key – Log in at app.mailgun.com, go to API Security, and create a key. Copy it right away. It is only shown once.

  • Step 2: Add the plugin in Cursor – Sign in to Cursor, open the Mailgun listing in the Cursor Marketplace, and add it. Or run /add-plugin mailgun-cursor in the agent chat.

  • Step 3: Connect your Mailgun account – Run the mailgun-setup command to add your API key and choose which tools your agent can use. Installing does not create a new account or change your account settings.

  • Step 4: Ask your agent – Try “audit domain health for mg.example.com” or “run a campaign preflight.” Your agent picks the right Skill and does the work.

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Why Sinch Mailgun

Why developers on Cursor choose Sinch Mailgun

Proven deliverability

Achieve reliable inbox placement so important messages reach users.

Built-in scalability

Start small and scale to millions of emails without changing your code.

Developer friendly

Simple APIs, clear logs, and powerful webhooks make integration, testing, and debugging straightforward.

FAQS

Frequently asked questions about Cursor for Mailgun

A Cursor account and a Mailgun account with an API key. What your agent can do depends on the Mailgun products on your plan.

The plugin is free and works with any Mailgun plan. You pay only for the Mailgun products you use, at your existing rates. Send has a free plan. Optimize and Inspect come with a 30-day free trial.

Yes. The plugin ships with a Mailgun operational safety rule, and setup lets you scope which tools your agent can use. Installing does not change your account settings, and your existing API and SMTP integrations keep working as they are.

Most email MCPs stop at send. Mailgun covers the full email lifecycle: validate your list, QA your template, send at scale, and dig into delivery problems, all from one plugin.

Cursor is now part of SpaceX Super Intelligence. The Mailgun plugin installs from the Cursor Marketplace today.

Email support@mailgun.com or follow the Help Center setup guide.

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