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How the things we build actually work

Product deep-dives, playbooks worth stealing, and the occasional note on why something is built the way it is. Written by the people who build it.

Product6 min read

What actually happens when a WhatsApp message fails

A template can be rejected, a number can be unreachable, and a send can be throttled — three different failures that look identical in a report that only counts sent and delivered.

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More from the blog

5 articles

What we write about

Product2

How a feature behaves once you are past the marketing page — the edges, the defaults, the why.

Playbooks2

Tactics that hold up in India — missed calls, quality ratings, the callback window.

Compliance1

GST, DLT and place of supply, explained by the people who have to get the invoice right.

Engineering1

Notes from the codebase — activations as sagas, retries as rows, money checked first.

Reading about it is the slow way

Start a free trial on any service — WhatsApp, IVR, SMS, voice — and see how credits, activations and reporting work on your own numbers.