Blog
Notes on shipping SaaS — architecture, WhatsApp Cloud API campaigns, and production lessons.
2026
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Why we left Evolution API for Official WhatsApp Cloud API
gsendrGSendr started on Evolution API. Working hours, daily caps, and delays still weren’t enough — numbers got banned fast. Here’s why we moved to Meta’s Official Cloud API.
3 min read Read →
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Automating SME ops with n8n and GenAI — without boiling the ocean
What I automate for startups and SMEs via Dotkod — n8n workflows, GenAI where it earns its keep, and the boring glue that actually saves hours.
3 min read Read →
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How we built GSendr to run WhatsApp + email campaigns across orgs
gsendrInside GSendr’s multi-tenant campaign engine — Official WhatsApp Cloud API, personalised bulk email, and a shared reply desk. ~10 orgs; ~10K+ WhatsApp and 10K+ emails daily.
4 min read Read →