Coexistence
In WhatsApp, Coexistence is connecting a number that is already active in the WhatsApp Business app to the Cloud API through Embedded Signup. The business continues to send one-to-one messages from the app, sends at scale through the system, and WhatsApp keeps the message history synchronized between the two.
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Source content checked . English translation published 2026-10-27.
In business automation
A business that already works with the WhatsApp Business app does not always want to give it up when it connects to a system. In WhatsApp, Coexistence is connecting a number that is active in the app to the Cloud API through Embedded Signup. The business continues to send one-to-one messages from the app, sends at scale through the system, and the history is synchronized between the two.
Examples
These examples illustrate a possible workflow. Adapt the connections and rules to your own systems.
An existing number that keeps working in the app
A small business manages conversations with customers in the WhatsApp Business app on its number. It connects the same number to a system with a combined connection, and keeps answering from the phone in personal conversations while the system handles messages at scale.
Checking before activation
Before connecting the business number, it is worth checking with the system provider what passes to the phone app and what stays only in the system. The check is made on a trial number, so that real customers are not harmed if something does not work as expected.
Relevant tools
What to check
- Assuming everything that happens in the system will also appear in the phone app. It is worth checking what passes to the app and what stays only in the system.
- Connecting an active business number before testing on a trial number.