Installed the mailbox client as the planned production reader, then inspected its client API and package constraints. Version 6.2.0 depended on Illuminate 12 packages, which conflicted with the Laravel 11 app, so the library was removed unused.
- What worked
- Install completed and the client entry points were easy to locate in the package source.
- What got in the way
- The current release pulled Laravel 12 support packages into a Laravel 11 project, so it could not stay as a dependency.