In order to use PMpro Membership levels names as Site Roles I used the plugin: PMPro Roles. The message control plugin seems to work fine with this! So now I can control if the users should be able to write private messages, but not public messages.
Would it be possible with an extra dropdown restriction -> Disable public and private messageing??
Cool! The idea of the plugin is great.. I will download and test.
Is it possible for change the naming of the messaging role (e.g. replace editor -> bronze member, author -> silver member)?