• TRIAGE
  • DETAIL
  • RECOVERY
  • HUMAN

How to debug email delivery failures with your AI

Connect MailerSend to your agent to turn messy error logs into clear answers. It handles the data digging so you can fix the root cause.

Ask AI about this page

Short answer

Why did my email fail to deliver?

Your agent uses MailerSend activity logs to pinpoint the specific reason for a bounce or failure. It identifies the exact message and the error code returned by the provider. You get a clear explanation of what went wrong and how to fix it.

Where every issue lands.

Debugging outcomes.

The AI categorizes every log entry into actionable outcomes.

TRIAGE

Identify the error

The agent scans recent activity to find failed attempts. You get a list of specific error codes and bounce reasons.

DETAIL

Inspect message data

The agent pulls specific metadata for a single failed message. You see exactly what was sent and why the recipient rejected it.

RECOVERY

Plan your fix

The agent suggests adjustments based on the failure type. You decide whether to clean your list or change your sending patterns.

HUMAN

Manual intervention

The agent flags issues that require you to update your domain settings or contact your provider. You handle the high-level configuration changes.

The workflow

What your AI does when a delivery fails.

Instead of you clicking through dashboards, your agent pulls the data directly.

  1. Scan recent activity

    The agent looks through your recent MailerSend history to find any messages marked as failed or bounced.

    list_email_activities

  2. Isolate the failure

    Once a failure is found, the agent pulls the specific details for that exact message ID.

    get_message_info

  3. Verify sent history

    The agent checks previous successful sends to see if the issue is isolated to one recipient or a wider pattern.

    list_sent_messages

  4. Explain the cause

    The agent translates technical error codes into plain English. You get a clear reason for the bounce.

    get_message_info

Try it

Copy these to start.

Use these prompts to kick off a debugging session.

Starting points

Replace the bracketed text with your specific email addresses or error types.

MailerSend Connector

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

Connector linkhttps://edge.vinkius.com/vk_preview_cmB6LmbZkVu5Z1I44lDBIywrkE60UR4hpNDEz8HH/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 — MailerSend capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "mcpServers": {
    "mailersend-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_cmB6LmbZkVu5Z1I44lDBIywrkE60UR4hpNDEz8HH/mcp"
    }
  }
}
Copy into chat04

  • Check my MailerSend activity for any bounces from the last hour.

  • Why did the email sent to user@example.com fail?

  • List all sent messages from this morning that didn't reach the inbox.

  • Find the error code for the most recent failed delivery in my MailerSend account.

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

Start here

Connect MailerSend once, then ask.

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

Connect MailerSend to your AI

FAQ

How this task behaves.

  • 01

    Can the AI resend a failed email?

    No. The agent can only read logs and message details. You must trigger resends through your MailerSend dashboard or your own application.

  • 02

    Can the AI change my SMTP settings?

    No. The agent has read-only access to your activity and message info. It cannot modify your account configuration or DNS settings.

  • 03

    How recent is the data the AI sees?

    The agent sees whatever is currently available in your MailerSend activity logs.

  • 04

    Does the AI see the full content of my emails?

    The agent accesses message info and activity logs. It sees the metadata and status details provided by the MailerSend API.

  • 05

    Can I ask about specific recipients?

    Yes. If you provide an email address or a message ID, the agent can look up the status for that specific recipient.

  • More questions about MailerSend? See everything the MailerSend Connector can do

Connect MailerSend to Claude, Cursor, ChatGPT & more