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. The canonical starting point, this is where you actually raise your hand. It's the horse's-mouth reference for the document... Blinkit Article · D2C Sell on Blinkit, Official Seller Onboarding Portal Blinkit In 3 answers
  2. Zepto actively courts D2C brands to diversify beyond mass FMCG, so this portal is the most direct route in. Go here first if... Zepto Article · D2C Zepto for Brands, Partner Onboarding Zepto In 3 answers
  3. A clean, no-nonsense glossary covering ROAS, CAC, MER, AOV and CPA in one place, the right first read before diving into any... Triple Whale Help Center Article · D2C A Guide to Ecommerce Metrics Triple Whale In 3 answers
  4. A leading marketing-mix-modeling-based attribution platform that doesn't rely on user-level pixel tracking, worth evaluating... Northbeam Tool · D2C Northbeam, The Marketing Intelligence Platform for Profitable Growth Northbeam In 3 answers
  5. An independent, side-by-side comparison of the major attribution platforms, useful for actually deciding between them instead... QRY Article · D2C Marketing Attribution Tools for DTC Brands (Northbeam vs Rockerbox vs Triple Whale) QRY In 3 answers
  6. A free, ready-to-use spreadsheet to actually compute your LTV, CAC and ratio instead of eyeballing it, the fastest way to get... Corporate Finance Institute Template · D2C LTV/CAC Ratio Template (Free Excel Template) Corporate Finance Institute In 3 answers
  7. Spells out the exact CAC, LTV and payback period formulas with an India lens, the most direct answer we found to 'how do I... FireAI Article · D2C D2C Unit Economics: The Exact Formulas for CAC, LTV & Payback Period FireAI In 3 answers
  8. A practical, diagnose-then-fix playbook that insists you find your top RTO cause before throwing tools at it, the most useful... GoKwik Blog Article · D2C How to Reduce RTO in E-commerce: A Complete Guide for Indian D2C Brands GoKwik In 3 answers
  9. The clearest explainer connecting NDR to RTO, showing that a failed delivery attempt becomes an RTO within 24-72 hours unless... Clickpost Blog Article · D2C NDR and RTO in E-Commerce: The Complete Operations Guide Clickpost In 3 answers
  10. A clear-eyed walk through the exact tension in the question, more spend versus intact margins, with practical pacing rules... Uptown Cow Article · D2C How to Scale Your Ecommerce Ad Spend Without Killing Your Profit Margins Uptown Cow In 3 answers
  11. From a fulfillment-and-shipping player with its own skin in the India D2C game, giving a practitioner's-eye comparison rather... Eshopbox Blog Article · D2C 10 Best Shipping Aggregators in India (2026) for Ecommerce & D2C Brands Eshopbox In 3 answers
  12. Directly answers the 'I've outgrown my current aggregator' question with a current alternatives list, which is more useful at... iCarry Blog Article · D2C Top Shiprocket Alternatives in India 2026 iCarry In 3 answers
  13. An Indian HR firm writing specifically about D2C hiring, not generic startup hiring - it names the multi-skill, adaptable... sutrahr.com Article · D2C How to Hire for D2C Brand: 10 Best Tips Finding the Right Fit SutraHR In 3 answers
  14. A screen-by-screen walkthrough of the actual e-filing form on ipindiaonline.gov.in, useful right before you sit down to file it... ebizfiling Article · D2C IP India (IPIndiaOnline) Trademark Registration, Step-by-Step 2025 Guide ebizfiling In 3 answers
  15. Goes beyond the registration checklist into actual brand-protection strategy, naming pitfalls, enforcement options, and what to... Unimarks Legal Article · D2C How to Register a Brand Name in India: The Strategic Brand Protection Blueprint (Updated 2026) Unimarks Legal In 3 answers
  16. The most complete single reference on fees, timeline and the ™ vs ® distinction, good as the one page to bookmark and return to... Intepat Article · D2C Trademark Registration in India: Complete Guide (2026) Intepat In 3 answers
  17. A stage-based guide that maps fulfillment needs to revenue bands rather than giving one-size-fits-all advice, genuinely useful... GoBolt Blog Article · D2C DTC Fulfillment Guide 2026: Scale from $1M to $10M GoBolt In 3 answers
  18. A ready-to-use checklist format is more useful in a live vendor evaluation than another prose article, print it, take it into... 3PeeL Blog Template · D2C What to Look for in a 3PL Partner: A Checklist for D2C Brands 3PeeL In 3 answers
  19. The cleanest starting map for someone with no product yet, 17 concrete ways to surface ideas (solve your own pain, mine trends,... Shopify Blog Article · D2C How To Find a Product to Sell Online: 17 Proven Methods (2026) Shopify Editorial In 3 answers
  20. This is the checklist we'd hand anyone before they order their first batch: it splits evaluation into market-based criteria... Shopify Blog Article · D2C How to Do Ecommerce Product Research (2026) Shopify Editorial In 3 answers
  21. The official source on how the WhatsApp Business Platform actually works underneath every BSP tool, worth understanding... Meta for Developers Article · D2C WhatsApp Cloud API: Get Started Meta In 3 answers
  22. The primary source: the tax department's own FAQ and user manual for the registration flow, worth bookmarking since every other... CBIC, Government of India Report · D2C FAQs and User Manual on New GST Registration CBIC In 3 answers
  23. The notification itself, dated 31 July 2023 and in force from 1 October 2023, that lets a small seller sell goods within one... GST Council (CBIC notification) Article · D2C Notification No. 34/2023-Central Tax: Exemption from Registration for Suppliers Selling Through E-commerce Operators CBIC In 3 answers
  24. A September 2026 operating guide from an Indian order-management software company on running replenishment, fill rates and... Unicommerce Article · D2C Quick Commerce Playbook for 2026: How Brands Can Scale on Blinkit, Zepto & Instamart Sakshi Sinha In 3 answers

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