WhatsApp API Onboarding Checklist — 2026 Step-by-Step

This WhatsApp API onboarding checklist is the printable companion to our WhatsApp API integration guide. Use it during sprint planning, vendor handoffs, and go-live reviews. Each item maps to a production requirement — skipping steps is why webhooks work in test but fail with real messages.

Too long? Start here

• Phase 1 (days 1–3): Meta Business Manager, verification docs, Ominiflow account
• Phase 2 (days 2–5): Phone number, display name, WABA connection
• Phase 3 (parallel): Template creation and submission — start early
• Phase 4 (days 5–10): Inbox, chatbot, integrations (Zoho/Shopify/webhooks)
• Phase 5 (days 10–14): Internal test → 50-contact pilot → production launch

Phase 1: Meta Business setup

1. ☐ Create or access Meta Business Manager (admin role)
2. ☐ Legal business name matches GST / incorporation certificate
3. ☐ Business address matches verification documents
4. ☐ Website live with privacy policy and contact page
5. ☐ Submit business verification (GST cert, utility bill, or MCA docs for India)
6. ☐ Assign team members with correct BM permissions (avoid single-person lockout)
7. ☐ Enable two-factor authentication on all admin accounts

Deep dive: How to Get WhatsApp API (Step-by-Step Setup Guide)

Phase 2: Phone number and WABA

1. ☐ Select dedicated business number (not personal WhatsApp active)
2. ☐ Register Ominiflow trial — start here
3. ☐ Connect Facebook OAuth to Business Manager
4. ☐ Create or select WhatsApp Business Account (WABA)
5. ☐ Verify number via SMS or voice OTP
6. ☐ Submit display name — must match brand (approval 1–3 days)
7. ☐ Confirm phone status = CONNECTED in Business Manager
8. ☐ Subscribe WABA to app: POST /{WABA_ID}/subscribed_apps

Common mistake: deleting personal WhatsApp before migration plan — see 5 common mistakes.

Phase 3: Message templates

1. ☐ List every outbound trigger (order confirm, OTP, cart recovery, etc.)
2. ☐ Assign correct category: utility, marketing, authentication, service
3. ☐ Draft body copy with {{1}}, {{2}} placeholders
4. ☐ Submit templates in Ominiflow + Meta Business Manager
5. ☐ Wait for approval (15 min – 48 hours per template)
6. ☐ Document approved template names + language codes for dev team
7. ☐ Test variable mapping — count mismatch causes error #132000

Reference: Template message API guide

Phase 4: Platform configuration

1. ☐ Configure team inbox — agents, roles, assignment rules
2. ☐ Build first chatbot flow (FAQ or lead qual) — no-code guide
3. ☐ Configure human handoff — fallback after 2 unrecognized messages
4. ☐ Set up opt-in capture (checkout checkbox, QR, click-to-WhatsApp ad)
5. ☐ Tag contacts by consent source and date
6. ☐ Enable agent notifications (browser + mobile)

Phase 5: Integrations

Pick your pattern from the integration guide:

1. ☐ CRM: Zoho OAuth connect, field mapping, deal-stage triggers
2. ☐ E-commerce: Shopify connect, order webhooks, cart recovery
3. ☐ Payments: Razorpay webhook → payment link templates
4. ☐ Helpdesk: Freshdesk ticket sync
5. ☐ Custom: HTTPS webhook endpoint, signature verification, async queue
6. ☐ iPaaS: Make/Zapier scenario tested with failure alerts

Webhook setup: webhook integration guide

Phase 6: Security and compliance

1. ☐ Webhook X-Hub-Signature-256 verification enabled
2. ☐ Access tokens in secrets manager (not git)
3. ☐ PII redaction in production logs
4. ☐ Marketing opt-in documented per contact
5. ☐ Opt-out keywords configured (STOP, unsubscribe)
6. ☐ Quality rating baseline recorded in WhatsApp Manager

Phase 7: Testing and go-live

1. ☐ Add 3–5 internal test numbers
2. ☐ Test outbound template send — all variables populated
3. ☐ Test inbound message → webhook → CRM/inbox update
4. ☐ Test agent reply within 24-hour window
5. ☐ Test chatbot all branches — no dead ends
6. ☐ Test agent handoff — response within 30 seconds
7. ☐ Pilot broadcast: 50–100 opted-in contacts only
8. ☐ Monitor delivery rate, block signals, quality rating for 48 hours
9. ☐ Full launch with warm-up schedule for volume ramp

Typical timeline by team type

FAQ