I looked at a fair amount of sync and backup tools for macOS a little while ago including this one and couldn’t find any that copied to an external drive on con

I looked at a fair amount of sync and backup tools for macOS a little while ago including this one and couldn’t find any that copied to an external drive on connection. Only on a schedule. Does anyone know if this is a technical limitation? It seemed like such a core thing to me but it just kept coming up missing.