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Notes from the infrastructure.

Occasional, substantive, zero growth-hackery. We write when we've learned something worth your time.

September 2026 · 4 min

Hello, Calder: why transactional email deserves its own company

Sending an email is easy. Knowing it arrived is the whole business — and why we said no to newsletters, yes to idempotency, and maybe to naira pricing.

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