Evaluate it as infrastructure you maintain.
The product in view
BlueBubbles supports iMessage access on Windows, Linux and Android through a macOS server. Its installation guide covers permissions, notification setup and network configuration. The software is open-source; the host, electricity, connectivity and operator time remain real inputs.
Before you choose
Decide whether your team wants to own updates and recovery before comparing it to a managed commercial service. A business number, support agreement and tested customer workflow are not established merely by installing the project. It may fit a controlled technical setup whose owner accepts those responsibilities. This entry describes the deployment model, not a blanket judgment about every possible use.