SourcingList · Building · Enrichment

List Building Tips

Pro tips for B2B list building - source mixing, enrichment workflow, template usage, and efficiency principles.

by Sacha Ranasinghe (ColdIQ)·none (all rights reserved by default)·135 on GitHub·updated 2026-02-19
git clone https://github.com/Cold-IQ/ColdIQ-s-GTM-Skills.git

Description

Pro tips for B2B list building - source mixing, enrichment workflow, template usage, and efficiency principles. Use when building prospect lists, optimizing data quality, or improving prospecting efficiency.

What this skill does

  1. 1Establishes four core list-building principles: mix sources, treat scraping as step one only, reuse modular templates, and avoid reinventing workflows.
  2. 2Defines a data quality hierarchy for prioritizing enrichment effort: verified email first, then direct phone, recent signal, ICP fit, and company data.
  3. 3Provides a pre-launch quality checklist covering bounce rate, email coverage, ICP verification, deduplication, and suppression lists.
  4. 4Benchmarks Clay efficiency: 1,000 prospects in 2-3 hours versus 80+ hours manually.

When to use

  • Your email bounce rate is above 2% and you need a diagnostic framework to find the cause.
  • You are building a prospect list for the first time and need to know what quality checks to run before outreach.
  • Your email coverage is below 70% and you need guidance on how to improve it with enrichment.
  • You are reviewing a team member's list-building workflow and want a standard to evaluate it against.

Tools used

Clay· Enrichment

Best for

Sales Development RepGTM Engineer

Format

TemplateWorkflowPlaybook

Frequently asked questions

What is List Building Tips?

List Building Tips is a Claude Code skill for sourcing by Sacha Ranasinghe (ColdIQ). Pro tips for B2B list building - source mixing, enrichment workflow, template usage, and efficiency principles.

When should I use List Building Tips?

Your email bounce rate is above 2% and you need a diagnostic framework to find the cause. You are building a prospect list for the first time and need to know what quality checks to run before outreach.

How do I install List Building Tips?

Run the install command (git clone https://github.com/Cold-IQ/ColdIQ-s-GTM-Skills.git). Once the skill is in place, Claude Code loads it automatically whenever a task matches what it does.

Is List Building Tips free to use?

The source is public on GitHub (Cold-IQ/ColdIQ-s-GTM-Skills), but the repository has no open-source license, so reuse rights stay with the author.

Source repository

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