email-infra

Guides DNS configuration, email warmup, and deliverability troubleshooting for cold email infrastructure.

242|77|Updated Jan 30, 2026
One-click install
npx skills add https://github.com/sachacoldiq/ColdIQ-s-GTM-Skills --skill email-infra
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: email-infra
Source: https://github.com/sachacoldiq/ColdIQ-s-GTM-Skills/tree/main/master-skills/cold-email/.claude/skills/email-infra
Command: npx skills add https://github.com/sachacoldiq/ColdIQ-s-GTM-Skills --skill email-infra

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill helps users set up, configure, and troubleshoot the technical infrastructure required for reliable cold email outreach, ensuring emails reach the inbox.

Core Features & Use Cases

  • Domain & DNS Setup: Guides through purchasing domains and configuring essential DNS records (MX, SPF, DKIM, DMARC).
  • Email Warm-up: Provides strategies and timelines for safely warming up new email inboxes.
  • Troubleshooting: Offers solutions for common deliverability issues, blacklists, and connection problems.
  • Use Case: Setting up a new domain for a cold email campaign, ensuring all DNS records are correctly configured and the inbox is properly warmed up before sending.

Quick Start

Guide me through setting up a new domain for cold email, including DNS configuration and warm-up.

Frequently Asked Questions about email-infra

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

FAQPage Schema
How do I set up DNS records for cold email deliverability?

To set up DNS records for cold email deliverability, you need to configure MX, SPF, DKIM, and DMARC records on your domain. This ensures email providers can verify your messages and route them to the inbox rather than spam folders.

What is the best way to warm up a new email inbox?

The best way to warm up a new email inbox is to follow a strategic timeline that gradually increases sending volume. This process builds a positive sender reputation with providers like Google Workspace and Microsoft 365 before launching full campaigns.

Why does my cold email infrastructure keep landing in spam?

Your cold email infrastructure might land in spam due to incorrect DNS configuration, lack of proper inbox warm-up, or being placed on an email blacklist. Troubleshooting involves verifying your SPF, DKIM, and DMARC records and monitoring deliverability.

Do I need a separate domain for cold email outreach?

You need a separate domain for cold email outreach to protect your primary corporate domain's reputation. Setting up secondary domains with proper MX, SPF, and DKIM configurations allows you to scale email operations without risking main domain deliverability.

How do I recover from an email blacklist when scaling cold campaigns?

To recover from an email blacklist when scaling cold campaigns, you must identify the listing cause, resolve underlying deliverability issues like misconfigured DNS records, and request delisting. Ongoing deliverability monitoring helps prevent future blacklisting.