sinch-mailgun-optimize

Monitor email deliverability via the Mailgun Optimize API.

9|4|Updated Jan 29, 2026
One-click install
npx skills add https://github.com/sinch/skills --skill sinch-mailgun-optimize
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: sinch-mailgun-optimize
Source: https://github.com/sinch/skills/tree/main/skills/sinch-mailgun-optimize
Command: npx skills add https://github.com/sinch/skills --skill sinch-mailgun-optimize

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

Helps teams identify and resolve email deliverability failures by providing a structured way to run inbox placement tests, monitor blocklists and spam traps, surface DMARC and reputation issues, and aggregate Postmaster and SNDS data for troubleshooting.

Core Features & Use Cases

  • Inbox placement testing with seed lists and polling for results to validate where mail lands across providers.
  • IP and domain blocklist monitoring and guidance for investigating and prioritizing delisting actions.
  • Spam trap detection and classification to diagnose list hygiene problems.
  • Aggregate health scoring, DMARC report retrieval, Google Postmaster and Microsoft SNDS integration for reputation insights.
  • Alerts and monitoring configuration for automated notifications on reputation or blocklist changes.
  • Use Case: When a customer reports increasing spam folder placement, run seed-list tests, check blocklists and spam trap hits, review DMARC and Postmaster metrics, and recommend remediation steps.

Quick Start

Run an inbox placement test for a specific domain in the user's region, poll the test result until complete, and summarize seed mailbox delivery outcomes and any immediate blocklist or spam trap alerts.

Frequently Asked Questions about sinch-mailgun-optimize

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I diagnose why my emails are landing in the spam folder?

To diagnose spam folder placement, run inbox placement tests with seed lists across providers, check IP and domain blocklist status, investigate spam trap hits, and review Google Postmaster or Microsoft SNDS reputation metrics to identify the root cause.

What is inbox placement testing and how does it work with seed lists?

Inbox placement testing uses seed lists to validate where your mail lands across different providers. You create a test for a specific domain, poll the API until results are complete, and summarize delivery outcomes for each seed mailbox to confirm successful inbox delivery.

How do I monitor IP and domain blocklists and prioritize delisting?

Blocklist monitoring tracks IP and domain listings across multiple providers. When a listing is detected, investigate the cause, classify severity, and prioritize delisting actions based on the blocklist's impact on your overall email deliverability and sender reputation.

Can I retrieve DMARC reports and Google Postmaster data through the Mailgun API?

Yes, you can retrieve DMARC reports and aggregate Google Postmaster data through the Mailgun Optimize API. Access monitoring endpoints using your Mailgun API credentials and region-specific base URLs to pull DMARC, Postmaster, and Microsoft SNDS reputation insights.

How do I detect and classify spam traps to fix list hygiene problems?

Spam trap detection identifies and classifies trap hits to diagnose list hygiene problems. Monitor spam trap activity through the Mailgun Optimize API, analyze which addresses triggered traps, and implement list cleaning procedures to remove invalid or recycled email addresses.

Do I need Mailgun API credentials and region-specific base URLs to use these deliverability features?

Yes, you need Mailgun API credentials and region-specific base URLs to access deliverability features. These credentials authenticate requests to endpoints for creating and polling inbox tests, blocklists, spam traps, DMARC, Postmaster, and SNDS monitoring data retrieval.