Cannot install Mail plugin on DEVONthink 3.0beta7

[BLUEFROG]

This was already reported and responded to here:

DEVONThink Mailbundle not compatible with Mail 12.4

macOS Mojave is not in beta. The current version is 10.14.6. Hold the Option key and choose Help > Report bug to start a support ticket as I have something I’m testing. Thanks.