Connect WhatsApp — Coexistence
Keep using the WhatsApp Business app on your phone while also connecting here.
Coexistence lets you connect a number that you keep using in the WhatsApp Business app on your phone. Your team can still chat from the phone, and HexaFloww also sees those conversations and can send campaigns and automations on the same number.
The Connect with existing WhatsApp Business App option only appears when your HexaFloww instance has Coexistence enabled. If you don't see it, and your number is free (not in any app), use Automatic Setup instead.
When to use Coexistence
Choose Coexistence when:
- The number is already in daily use in the WhatsApp Business app and your team isn't ready to stop using the app.
- You want campaigns and automations from HexaFloww and hands-on chat from the phone on the same number.
Understand the limitations first
This is a one-way choice for the number You cannot later upgrade a Coexistence number to a normal API connection, or switch a normal connection to Coexistence, without disconnecting and starting over.
With a Coexistence number:
- Group messaging is not available via the API. Groups stay visible in the phone app only.
- Disappearing messages, view-once, and live location are disabled for the whole number.
- Sending speed is capped at 20 messages/second (instead of 80).
- The profile picture can't be changed after onboarding.
- WABA migration is not supported for this number.
- Not available for numbers registered in Nigeria or South Africa.
Connect
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Open the WhatsApp connect page. Sidebar → Connect Accounts → WhatsApp.
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Choose "Connect with existing WhatsApp Business App". A disclosure window shows the limitations above. Read it, tick the confirmation checkbox, and continue.
Coexistence disclosure window with the limitations table and confirmation checkbox -
Complete Meta's popup on the same phone. The Meta popup guides you through linking the number that's already in your WhatsApp Business app. Approve the connection request that appears in the app on your phone.
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Wait for the history sync. After connecting, Meta sends recent message history to HexaFloww once, so your existing chats appear in the inbox. New messages sent from the phone show a "Sent from phone" tag.
If phone-sent messages don't appear Some WhatsApp webhook fields must be enabled in the Meta App Dashboard for Coexistence sync to work. If messages you send from the phone aren't showing in the HexaFloww inbox, contact support — this is a Meta dashboard setting, not something you can fix from HexaFloww.
How replies work
When someone on your team replies from the phone app, HexaFloww marks that conversation as handled by a human, so the AI auto-reply won't also jump in. The same applies when you reply from the HexaFloww inbox.