• LOGS
  • DOMAIN
  • BOUNCES
  • HUMAN

How to debug email delivery failures with your AI

Connect Mailgun to your AI client to turn raw delivery logs into clear answers about why your messages aren't landing.

Ask AI about this page

Short answer

Why are my emails bouncing or dropping?

Your AI scans your Mailgun logs and domain status to find the specific error codes or reputation issues causing the failure. You'll get a breakdown of bounce reasons and domain health immediately.

Where every issue lands.

Identify the root cause.

The AI categorizes your delivery data into actionable buckets.

LOGS

Error identification

The AI pulls recent event data to find specific SMTP error codes or rejected recipients. You get a list of exactly what went wrong.

DOMAIN

Reputation check

The AI examines your domain settings and health. This shows if your sending reputation is the reason for the drop.

BOUNCES

Bounce analysis

The AI looks at your bounce history to find patterns in hard or soft failures. This helps you clean your lists.

HUMAN

Manual fixes

The AI flags issues that require you to manually update DNS records or contact specific recipients. You decide how to respond.

The workflow

What your AI does when the data arrives.

Your AI handles the heavy lifting of parsing Mailgun's technical output.

  1. Scan recent activity

    The AI looks through your most recent email events to find failed deliveries.

    list_logs

  2. Check domain status

    The AI pulls your domain configuration and health metrics to check for authentication issues.

    get_domain

  3. Analyze bounce patterns

    The AI reviews your bounce list to see if specific addresses or providers are blocking you.

    list_bounces

  4. Summarize findings

    The AI combines the logs, domain data, and bounce info into a single report of what to fix.

    list_logsget_domainlist_bounces

Try it

Copy these to start.

Use these prompts to kick off your investigation.

Starting points

These are opening lines. Swap out the domain names or specific error codes with your own data.

Mailgun Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_fgcU2KpO0lr76CoFuRObQFd3sxC2f0VrRcHAcynB/mcp

Claude Desktop

Follow the steps below to connect in seconds.

  1. 1In Claude Desktop, open Settings → Connectors.
  2. 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
  3. 3Click Add and start a new chat — Mailgun capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "mcpServers": {
    "mailgun-transactional-email-domains-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_fgcU2KpO0lr76CoFuRObQFd3sxC2f0VrRcHAcynB/mcp"
    }
  }
}
Copy into chat04

  • Check my Mailgun logs for any recent delivery failures.

  • Why is my domain 'example.com' having reputation issues?

  • List all recent bounces and tell me if there is a pattern.

  • Analyze the logs for 'example.com' and tell me why my emails are hitting spam.

  • Claude
  • ChatGPT
  • Cursor
  • VS Code
  • Windsurf
  • Claude Code
  • JetBrains
  • Cline

Start here

Connect Mailgun once, then ask.

You only need to link your Mailgun account once. Your credentials stay encrypted, and you can immediately start asking questions about your email performance.

Connect Mailgun to your AI

FAQ

How this task behaves.

  • 01

    Can the AI fix my DNS records?

    No. The AI can identify if your DNS settings are wrong using get_domain, but you must make the actual changes in your DNS provider.

  • 02

    Can the AI delete bounced email addresses?

    No. The AI can list your bounces, but it cannot modify your Mailgun recipient lists or delete data.

  • 03

    Does the AI see my actual email content?

    No. The AI only accesses the event logs and domain metadata provided by the Mailgun tools.

  • 04

    How deep does the log analysis go?

    The AI can analyze any logs available through the list_logs tool, allowing it to find specific error codes from recent events.

  • 05

    Can I use this to monitor my domain health in real time?

    You can ask the AI to check your domain status whenever you suspect an issue, but it does not provide a continuous live dashboard.

  • More questions about Mailgun? The Connector page answers them. See everything the Mailgun Connector can do

Connect Mailgun to Claude, Cursor, ChatGPT & more