Explore · The library

Every resource founders actually use, in one library.

The essays, videos, podcasts, books and tools behind every answer across eChai's hubs, from starting up to go-to-market, D2C, founder money and AI, each with a note on why it is here.

What founders use most, ranked by how many answers lean on it.

  1. Connects each signal type to the exact personalized message it should trigger. autobound.ai Guide · How Founders Use AI Signal-Based Selling: The Complete Guide Autobound
  2. Video · How Founders Use AI How To Use LinkedIn Sales Navigator To Generate Leads (step by step) Jed Marley (Mailshake)
  3. Video · How Founders Use AI Crazy Clay Workflow for Outbound Agency Growth Eric Nowoslawski (Growth Engine X)
  4. Maps which tools actually surface funding, hiring, and tech-stack signals. klenty.com Article · How Founders Use AI 25 best sales intelligence tools Klenty
  5. A compact playbook for founders who want to start with two or three signals, not twenty. heysid.com Guide · How Founders Use AI Signal-Based Selling: The B2B Outbound Playbook Hey Sid
  6. Google's own answers to the edge cases everyone argues about. support.google.com Guide · How Founders Use AI Email sender guidelines FAQ (official) Google
  7. The announcement that changed cold email forever; know what triggered the new era. blog.google Article · How Founders Use AI Gmail introduces new requirements to fight spam Google
  8. A pre-flight checklist you can run before every campaign launch. smartlead.ai Guide · How Founders Use AI Cold Email Checklist: Everything You Need to Send Better Emails Smartlead
  9. A full sending-infrastructure blueprint with current volume norms baked in. marketing-assets.smartlead.ai Guide · How Founders Use AI The Cold Email Blueprint (PDF) Smartlead
  10. Concrete benchmarks like the 85%+ inbox placement target to measure yourself against. cleanlist.ai Guide · How Founders Use AI The 2025 Guide to Cold Email Deliverability Cleanlist
  11. Infrastructure-level view of domains, mailboxes, and rotation from a sending-infra vendor. maildoso.ai Guide · How Founders Use AI Cold Email Deliverability Guide: How to Avoid Spam Folders Maildoso
  12. Separates what Google says from what Google measurably enforces. gmass.co Article · How Founders Use AI Gmail Bulk Sender Guidelines: The Rules They Actually Enforce GMass
  13. Covers the late-2025 enforcement wave that started rejecting non-compliant mail outright. redsift.com Article · How Founders Use AI Gmail's enforcement ramps up: what bulk senders need to know Red Sift
  14. Video · How Founders Use AI The Ultimate 2025 Cold Email Deliverability Guide (99% Inbox Placement) Independent cold email operator (YouTube)
  15. Video · How Founders Use AI 7 Cold Email Deliverability Tips To Land in The Inbox in 2025 Independent cold email operator (YouTube)
  16. Video · How Founders Use AI Cold Email Deliverability MASTERCLASS: Inbox Every Time Independent cold email operator (YouTube)
  17. Video · How Founders Use AI Cold Email Deliverability 2026: Everything You Need to Know to Avoid Spam Independent cold email operator (YouTube)
  18. Video · How Founders Use AI Outbound Email Deliverability Update for End of 2025 Independent cold email operator (YouTube)
  19. Connects deliverability hygiene to actual sequence design, not just DNS records. octavehq.com Guide · How Founders Use AI Building High-Deliverability Cold Email Sequences Octave
  20. How to set up secondary domains and mailboxes cheaply without wrecking your main domain. inboxkit.com Guide · How Founders Use AI Best Cold Email Infrastructure for Startups InboxKit
  21. A plain-language translation of the Google/Yahoo rules for non-technical founders. factors.ai Article · How Founders Use AI Understanding Google's New Guidelines for Bulk Email Senders Factors.ai
  22. Founder-lens comparison including what a complete stack actually costs per month. instantly.ai Article · How Founders Use AI Best Cold Email Software for Founders: 7 Tools Instantly.ai
  23. Actually tested rankings from a credible data vendor, not an affiliate farm. hunter.io Article · How Founders Use AI 10 Best Cold Email Outreach Tools, Tested & Ranked Hunter.io
  24. Video · How Founders Use AI Full Instantly.ai Tutorial 2025 (Best Cold Email Software) Independent cold email operator (YouTube)

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The hubs

Starting Up Find an idea, validate it, build, and land your first customers. 1327 questions GTM Go-to-market, from breaking in to how the best teams do it. 379 questions D2C Building a direct-to-consumer brand, India-first. 512 questions Wealth Paying yourself, ESOPs, secondaries, and de-risking founder wealth. 165 questions How Founders Use AI How founders actually put AI to work, mapped topic by topic. 360 questions Glossary Plain-language definitions of the startup and VC terms you'll hit. 425 terms