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.
- A law-firm-authored piece that reads results the way an examiner or opposing counsel would, useful once you're past basic... Lexology Article · D2C How to Use IPIndia Public Search for Easy Trademark Checking Lexology
- The definitive D2C-specific breakdown of the CAC you should actually track: new-customer CAC vs blended CAC, why the gap... 1800dtc.com Article · D2C How to Calculate D2C CAC: Formulas for New & Blended 1-800-D2C
- A clean beginner-level explainer of what DTC fulfillment actually involves day-to-day, useful as a first orientation before... eFulfillmentService Blog Article · D2C DTC Fulfillment: What It Means & How to Choose a 3PL eFulfillment Service
- Even if you're building in India, seeing how two of the biggest global 3PLs differentiate (network size vs... ShipCalm Blog Article · D2C ShipBob vs ShipMonk (vs ShipCalm): A Complete Comparison in 2026 ShipCalm
- From the fulfillment arm of India's most-used shipping platform, a practical guide to what D2C-specific fulfillment (versus... Shiprocket Fulfillment Blog Article · D2C The Ultimate D2C eCommerce Fulfillment Guide Shiprocket Fulfillment
- An independent business-press look (not vendor marketing) at how India's 3PL fulfillment market is developing alongside D2C... Inc42 Article · D2C How Shiprocket Fulfillment Empowers D2C Brands To Stay Agile And Competitive In An $88 Bn Ecommerce Market Inc42
- A short, no-hype reference on building a coherent product line, research trends, fulfil a unique need, target a demographic,... Shopify Help Center Article · D2C Choosing products to sell (Shopify Help Center) Shopify
- The best argument we found for launching with one hero SKU instead of a sprawling catalog, it shows how brands dilute... Triple Whale Blog Article · D2C Why Your Hero Products Should Be the Atomic Unit of Your Business Triple Whale (with Nate Poulin, Feat)
- Web Smith of 2PM is one of the sharpest voices on how DTC brands survive in an Amazon-dominated world, and this piece distills... ShipBob Blog Article · D2C The DTC Success Formula: Building a Brand [with Web Smith] Web Smith (2PM) via ShipBob
- Real category data from 1,000+ Indian D2C applicants rather than opinion, beauty & personal care, F&B, and fashion dominate the... Inc42 Report · D2C The State Of India's D2C Brands: Findings From The Hunt For India's Fastest-Growing D2C Brands Inc42 (FAST42, with Shiprocket)
- Fireside's Kanwaljit Singh has backed Mamaearth, boAt, Yoga Bar and Vahdam, so his read on where headroom remains, ayurveda,... Forbes India Article · D2C You Can Still Build Many Hundreds, If Not Thousands, Of Brands In India: Kanwaljit Singh Kanwaljit Singh (Fireside Ventures) via Forbes India
- A regularly updated read on what's actually growing in search and sales, useful as a demand signal and idea starter, with the... Shopify Blog Article · D2C 20 Trending Products and Things To Sell Online (2026) Shopify Editorial
- A second independent perspective on the India WhatsApp tool landscape from a competing vendor, useful for cross-checking claims... Zoko Article · D2C Best WhatsApp Marketing Services in India 2025 Zoko
- The most direct plain English answer to this exact question, written by a payments company that sees the problem from both... Cashfree Article · D2C Do You Need GST to Sell Online in India? Rules, Limits & TCS Explained Cashfree Payments
- Answers the practical follow up question a founder hits right after GST: can I even take payments without one. Written by a... PhonePe Business Article · D2C Payment Gateway Without GST: Can You Accept Online Payments? PhonePe
- Spells out the actual cost of treating GST as optional: the penalty math under Section 122, the 18% interest clock, and the... Masters India Article · D2C Penalty for Not Registering or Late Registering Under GST Masters India
- Written by a payment company that onboards thousands of small sellers, so it frames GST registration around the real founder... Razorpay Learn Article · D2C GST Registration for Small Business - Minimum Turnover, New Rules & Benefits Razorpay
- The clearest global explainer of economic nexus, the international equivalent of India's e-commerce mandate: the idea that... Stripe Article · D2C Introduction to US Sales Tax and Economic Nexus Stripe
- Shopify's own 2026 guide to US sales tax makes the same core point GST does for India: the platform will not register or remit... Shopify Article · D2C Ecommerce Sales Tax: Complete Guide for US Businesses (2026) Shopify
- A tax compliance vendor's FAQ that lays out registration timing cleanly: register before you start selling in a jurisdiction,... Avalara Report · D2C Sales Tax Registration FAQ Avalara
- If a D2C brand ever ships direct to Europe, this explains the EU's equivalent to India's threshold question: a EUR 10,000 cross... amavat Article · D2C VAT OSS Threshold Explained: What Happens After EUR 10,000 amavat
- The global founder community version of the exact question in this brief: whether to formalise before revenue or wait, useful... Indie Hackers Thread · D2C You Don't Need an LLC... Yet. How and When to Form a Business Entity Indie Hackers
- Explains the newest fast track (effective November 2025, Notification 18/2025) that most CA firm websites have not caught up... TaxGuru Report · D2C All About New GST Registration Rule 14A: 3-Day Auto Approval TaxGuru
- Razorpay writes this for the same founders opening a payment gateway account right after GST registration, so the document set... Razorpay Learn Article · D2C Documents Required for GST Registration: A Checklist Razorpay
The hubs
Starting Up
Find an idea, validate it, build, and land your first customers.
GTM
Go-to-market, from breaking in to how the best teams do it.
D2C
Building a direct-to-consumer brand, India-first.
Wealth
Paying yourself, ESOPs, secondaries, and de-risking founder wealth.
How Founders Use AI
How founders actually put AI to work, mapped topic by topic.
Glossary
Plain-language definitions of the startup and VC terms you'll hit.
eChai Partner Brands
The partnership →