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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.
- Gorgias has a vested interest in the support layer, but this guide is genuinely useful as a plain-English map of how commerce... gorgias.com Article · D2C A User-Friendly Guide to Ecommerce Tech Stacks Gorgias In 2 answers
- The clearest plain-language breakdown of the 45-class system we found, with D2C-relevant examples (Class 3 cosmetics, Class 25... IncorpX Article · D2C 45 Trademark Classes in India: Choose the Right One IncorpX In 2 answers
- A tight, step-by-step availability-check guide that's easy to follow the first time you use the government search tool without... LegalWiz Article · D2C How to Check Trademark Availability in India: Step-by-Step Guide LegalWiz In 2 answers
- The cleanest plain-English starting point from the platform most Indian D2C brands actually run on. It nails the core idea -... shopify.com Article · D2C What Is Contribution Margin? Definition and Guide Shopify In 2 answers
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Video · D2C
Contribution Margin - CM1, CM2, CM3 | Startup
Sarthak Ahuja
In 2 answers
- The best worked-example explainer for actually doing the math: Net Sales minus product cost, shipping, payment fees, fulfilment... storehero.ai Article · D2C Contribution Margin Formula for Ecommerce (With Real Examples) StoreHero In 2 answers
- Goes one level deeper than a formula: it rebuilds the contribution-margin income statement for a real D2C P&L, so you can... polaranalytics.com Article · D2C Contribution Margin Ratio, Per Unit & Income Statement: The Complete DTC Breakdown Polar Analytics In 2 answers
- The most concrete India-specific breakdown of what a returned COD order actually costs - forward + reverse shipping, packaging,... hillteck.com Tool · D2C True Cost of RTO for Indian D2C Brands: Formula + Calculator HillTeck In 2 answers
- An encyclopedia-style reference rather than a vendor's sales pitch, which makes it a more neutral place to learn the actual... Racklify Warehouse & 3PL Logistics Encyclopedia Article · D2C Choosing D2C Fulfillment Partners: The Right Partner and Setup Racklify In 2 answers
- One of the leading India-first 3PLs built specifically for D2C, marketplace and quick-commerce fulfillment together, its 20+... WareIQ Tool · D2C eCommerce Fulfillment India: 3PL for D2C, Marketplace & Quick Commerce WareIQ In 2 answers
- Makes the India-specific case for 3PL over self-fulfillment, real estate cost, labour management, and pincode reach are... WareIQ Blog Article · D2C Why E-commerce and D2C Businesses Choose 3PL for Their Fulfilment Needs WareIQ In 2 answers
- A current shortlist of the actual India 3PL landscape a founder would be choosing between, useful as a starting point for... WareIQ Blog Article · D2C Top 10 3PL Warehousing Companies in India (2026 List) WareIQ In 2 answers
- The direct source for Wati's actual current India pricing tiers, check here before trusting a third-party pricing comparison... Wati Tool · D2C Wati Pricing | WhatsApp Business API Wati In 2 answers
- The most direct Shopify-to-WhatsApp bridge available, auto-syncs your catalog and turns WhatsApp carts into real orders, the... Interakt Tool · D2C WhatsApp Commerce, Setup WhatsApp Store & Sell Online (Interakt) Interakt In 2 answers
- Built specifically around automation triggers, cart recovery, promotional broadcasts, customer segments, on the official API,... Wigzo Tool · D2C WhatsApp Marketing (Wigzo) Wigzo In 2 answers
- Gupshup is one of Meta's largest India-focused BSPs and the most technical/flexible option for higher-volume senders, this... Gupshup Article · D2C The Ultimate Guide to WhatsApp Business API Gupshup In 2 answers
- 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 2 answers
- A rare pricing comparison that actually breaks down BSP platform fees separately from Meta's per-conversation charges, which is... Codingclave Article · D2C WhatsApp API Pricing India 2026: Audited Costs From Rs 0/mo Codingclave In 2 answers
- A comprehensive, current D2C-specific guide covering setup through automation through compliance in one place, a good... Hawknest Article · D2C WhatsApp Marketing for D2C Brands: The Complete 2026 Guide Hawknest In 2 answers
- Makes the strongest ROI case for prioritising WhatsApp with concrete India performance figures, useful ammunition if you need... iMark Infotech Article · D2C WhatsApp Business Marketing in India: The Channel Driving 11x ROAS Most Brands Still Underuse iMark Infotech In 2 answers
- Written specifically for D2C sellers rather than generic taxpayers, it walks through the exact mistakes that block a first... ITRnGST Article · D2C The E-commerce & D2C GST Guide (2026): Registration, TCS & Refund Wins ITRnGST In 2 answers
- Shopify's own India tax documentation is the most direct answer for a founder building on Shopify specifically: what GST does... Shopify Help Center Article · D2C GST in India FAQ Shopify In 2 answers
- The one resource that goes past 'GST is mandatory' into the operational reality of quick commerce: separate GSTIN or APOB... Tax Garden Article · D2C GST and Compliance Guide for Blinkit, Swiggy Instamart, and Zepto Sellers (2026) Tax Garden In 2 answers
- The official onboarding document handed to every newly registered taxpayer, worth reading once end to end so you know exactly... GST Portal, Government of India Report · D2C Welcome Kit for New Taxpayers GST Portal, Government of India In 2 answers
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 →