WhatsApp Business API
OnSync is the easiest way to connect to the official WhatsApp Business API, send campaigns, and handle support in a single inbox.
No WhatsApp device sharing — official Meta partner • 3-day free trial
Still using a single device?
WhatsApp Web sessions time out and make compliance difficult. OnSync gives your team a secure, multi-seat workspace.
Manual template approvals?
Upload once and reuse. We sync template status from Meta so you can launch campaigns faster.
Blind campaign performance?
Stop guessing. Drill into opens, replies, and conversions per template, funnel, and agent.
Why OnSync
Automate the boring parts, empower your team, and stay compliant with Meta policies.
Reply to WhatsApp, Instagram, Facebook, and Telegram messages from the same workspace without juggling devices.
Build welcome flows, lead qualification, and follow-up nudges with our drag-and-drop automation builder.
We handle template approvals, 24‑hour session rules, and brand verification so you can focus on messaging.
Assign conversations to sales reps, leave internal notes, and measure performance by teammate.
Sync contacts with your CRM and trigger WhatsApp automations with Zapier, HubSpot, and custom webhooks.
Track delivery, read receipts, campaign ROI, and agent response times in one dashboard.
Campaigns
Segment by behavior, insert personalization tokens, and send approved templates to thousands of contacts with rate-limit protection.
Automations
Use Zapier or our API to trigger WhatsApp messages from HubSpot, Shopify, or custom apps. Automatically hand off to human agents when needed.
FAQ
How long does onboarding take?
Most teams complete verification and connect their WhatsApp Business number in 48 hours. Our success team handles steps with Meta on your behalf.
Do you support template management?
Yes. Upload, sync, and categorize message templates, then trigger them from automations or the inbox when the 24‑hour session expires.
Can I connect multiple numbers?
OnSync supports multiple WABA numbers under the same organization. Assign different numbers to teams or regions, all inside one workspace.
Start your three-day free trial or book a call with our onboarding specialists. We’ll handle Meta verification, template import, and team training.