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Case study / Communications & messaging

Flowcall Communication Platform

An API-driven communication portal for customer messaging: templates, onboarding journeys and a WhatsApp/email/SMS-ready architecture that powers communications across CodeSense platforms.

ASP.NET CoreREST APIsMS SQL ServerMessage templatesMulti-channel architecture

The problem

Every business system eventually needs to message customers: booking confirmations, status updates, onboarding links, reminders. Building messaging into each system separately produces duplicated code, inconsistent branding and no central history of what was sent to whom.

What CodeSense built

Flowcall — a communication portal and messaging platform:

  • API-driven messaging — systems call Flowcall’s REST API; Flowcall handles delivery.
  • Templates — centrally managed message templates with personalisation, so every communication is consistent and editable without code changes.
  • Customer onboarding — signup links and guided journeys delivered through the channel the customer actually reads.
  • Multi-channel architecture — WhatsApp, email and SMS-ready routing with per-channel delivery tracking.
  • Send history — every message logged: who, what, when, which channel, delivered or not.

Engineering notes

Flowcall is built as a standalone product, not an internal utility: API keys per consuming system, rate limiting, template versioning and a portal for managing communications. CodeSense platforms — JobSentry, ClubCo, Notify — consume the same public API offered to customers, which keeps the product honest: it is production-proven by daily operational traffic.

The result

A communication portal any business can put behind its systems — and the engine CodeSense products already trust for their own customer messaging.

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