ShelCron

Integrations & Automation

SMS Integration

SMS notifications and two-way messaging hooks with consent-aware sending patterns.

SMS Integration adds reliable text messaging to product and ops workflows—OTP, alerts, appointment reminders, and agent notifications—while keeping opt-in/opt-out and failure handling explicit. We implement provider APIs, templates, and monitoring suited to your use cases and jurisdictions you identify.

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Who it’s for

  • Product teams adding OTP or alert SMS
  • Ops teams notifying field staff or customers
  • Contact centers bridging SMS with CRM or dialer tools

Problems we address

  • SMS is sent from unmanaged personal numbers
  • Provider webhooks for delivery status are ignored
  • Consent and opt-out are not enforced in code paths

Expected outcomes

  • Provider integration with template catalog
  • Delivery status handling and retries where appropriate
  • Consent and suppression checks in send paths

Capabilities

Concrete engineering capabilities included in a typical engagement for this service.

Outbound SMS API integration

Inbound SMS webhook handling

Template and variable management

Delivery receipt processing

Suppression / opt-out list hooks

Rate and cost-aware sending patterns

Technology

Representative technologies used for this service. Final stack depends on your estate.

  • Twilio / similar SMS APIs
  • Webhooks
  • Queues
  • CRM hooks
  • Node.js / Python

Architecture

Integration flow

Events move between systems through APIs, queues, and workflow runners.

Source systemWebhook / APIQueueAutomationTarget system

Deliverables

  • SMS flow design for agreed use cases
  • Provider configuration and app integration
  • Webhook handlers for status/inbound
  • Operator guide for templates and suppression

Out of scope

  • Carrier registration / 10DLC campaign filing unless scoped
  • Legal advice on messaging consent laws

Timeline

Typical timeline

1–4 weeks

Timeline depends on scope, access, and dependencies—not a delivery guarantee.

Process

A clear delivery path from discovery through handover and optional support.

  1. 01

    Discovery

    Goals, constraints, success criteria, and current-state review.

  2. 02

    Architecture

    Target design, interfaces, risks, and delivery sequence.

  3. 03

    Implementation

    Incremental build with visible progress and documented decisions.

  4. 04

    Testing

    Functional checks, failure paths, and acceptance criteria validation.

  5. 05

    Deployment

    Controlled release to staging and production with rollback paths.

  6. 06

    Handover

    Runbooks, access notes, and operator/admin walkthrough.

  7. 07

    Support

    Optional hypercare window or retainer continuity after go-live.

Custom engagement

Pricing depends on architecture, traffic profile, and integration depth. Share your requirements for a scoped quote.

Related work

Example / concept projects shown for illustration unless otherwise verified.

FAQ

No. Carrier and handset conditions vary. We implement correct provider usage, status handling, and fallbacks you choose.

Ready to build?

Tell us about your environment, constraints, and target outcomes. We’ll recommend a package or a scoped quote.