Which mailbox providers does it analyze?

It provides guidance for all major providers including Gmail (Postmaster), Microsoft (SNDS), Yahoo, and enterprise filters like Barracuda.

How does this skill help with spam folder issues?

It provides a diagnostic playbook to identify whether the issue stems from technical authentication gaps, poor sender reputation, or list hygiene problems.

Is this skill relevant for new sending domains?

Absolutely. It contains specific templates for IP and domain warmups to help you build a positive reputation from scratch.

Can it help me set up DMARC or SPF?

Yes, it includes frameworks for validating and auditing infrastructure settings to ensure proper alignment and authentication.

Does it support international email regulations?

The skill includes compliance checklists for major global standards including GDPR, CASL, and CAN-SPAM.

Email Deliverability Ops

Name: Email Deliverability Ops
Author: gtmagents

bygtmagents

•

Marketing Automation

Optimizes email inbox placement and sender reputation through technical audits and structured remediation playbooks.

About

The Deliverability Operations skill equips Claude with specialized knowledge to investigate and resolve email delivery issues. It provides a comprehensive framework for monitoring sender reputation via Google Postmaster and SNDS, auditing infrastructure settings like SPF, DKIM, and DMARC, and managing list hygiene. Whether you are troubleshooting a sudden drop in engagement or preparing for a high-volume IP warmup, this skill offers the diagnostic worksheets and compliance checklists necessary to ensure your messages reach the inbox.

Key Features

Structured IP and domain warmup tracking templates
29 GitHub stars
List health analysis and engagement-based segmentation strategies
Technical infrastructure auditing for SPF, DKIM, DMARC, and BIMI
Comprehensive reputation monitoring across major ISPs and providers
Global compliance checklists for GDPR, CAN-SPAM, and CASL

Use Cases

Diagnosing and remediating sudden spikes in spam folder placement
Planning and tracking a safe volume ramp for new sending infrastructure
Executing a technical audit of sending domains and authentication protocols

About

Key Features

Structured IP and domain warmup tracking templates
29 GitHub stars
List health analysis and engagement-based segmentation strategies
Technical infrastructure auditing for SPF, DKIM, DMARC, and BIMI
Comprehensive reputation monitoring across major ISPs and providers
Global compliance checklists for GDPR, CAN-SPAM, and CASL

Use Cases

Diagnosing and remediating sudden spikes in spam folder placement
Planning and tracking a safe volume ramp for new sending infrastructure
Executing a technical audit of sending domains and authentication protocols