Every Indian business deserves a single, neutral way to price a parcel between any two pincodes — accurately, in INR, with the quote always matching the invoice. That's the API we're building.
Our mission
Indian commerce loses crores every year to the gap between the shipping fee shown at checkout and what the courier actually bills. Stale pincode data, guessed zones and ignored volumetric weight turn every order into a small reconciliation headache.
Postpin closes that gap with one API call: real India Post-synced pincodes, a deterministic zone engine, billable-weight math and a fully itemised, GST-aware charge — so the number your customer sees is the number you pay.
“A quote is a promise. If the invoice breaks it, the checkout was lying.”
The problem we exist to solve — and the bar every release is measured against.
Pincodes synced from India Post
42M+
Rate calls served
1,284
Tenants on Postpin
99.9%
Uptime, last 12 months
Milestones
Two ops engineers, tired of reconciling courier rate sheets by hand, set out to build a single neutral shipping-rate API for India.
A nightly cron began diffing the India Post directory into every tenant's pincode master — no more stale CSVs or manual uploads.
Postpin crossed full national pincode coverage with zone resolution for every serviceable PIN across all states and union territories.
The rate engine, rate cards, webhooks and usage analytics shipped to GA — now serving 1,284 tenants and 42M+ calls a month.
What we value
The quoted price must equal the invoiced price. We obsess over zone resolution, volumetric weight and GST so your checkout never lies.
Predictable JSON, typed SDKs, honest docs and sub-50ms responses. If it takes more than five minutes to your first quote, we failed.
India Post-native pincodes, INR-first billing with GST invoices, and a zone engine modelled on how the country actually ships.
Domain and IP-scoped keys, signed webhooks, audit logs and a 99.9% SLA. Your pricing data and your customers' trust come first.
The team
Engineers, designers and operators who've shipped logistics and payments at scale — now building the rate layer they always wished existed.
Co-founder & CEO
Co-founder & CTO
Head of Engineering
Head of Product
Lead, Data & Sync
Design Lead
Developer Relations
Head of Customer Success
From the blog
A look inside the origin × destination resolution that turns two pincodes into a stable, reproducible zone — every single time.
Why a light, bulky parcel costs more to ship, and how Postpin's billable-weight math keeps your quotes honest at the cart.
Diffing the India Post directory at 00:30 IST — inserts, updates, retirements, rollback and the alerts that catch a bad sync.
Careers
We're a remote-friendly team based in Jaipur, hiring across engineering, data, sales and developer relations. Strong ownership, honest pricing, real problems.
See all openings1,000 free rate calls every month. No credit card. Be live in five minutes.