https://www.theverge.com/2018/8/6/17657400/apple-macos-mojave-windows-10-migration-tool

Apple’s upcoming macOS Mojave release will have an improved data migration tool that will let Windows users transfer app accounts, contacts, documents, emails, and other third-party app data when moving from a PC to a Mac. First spotted by someone on Twitter and later noted by 9to5Mac, the new feature is part of the existing Migration Utility tool, which could already move some data from a Windows PC to a new Mac. Now, however, the tool will let you transfer data from third-party applications like Microsoft Outlook.

As 9to5Mac points out, previous versions of Migration Utility, as well as the Setup Assistant tool, could move mostly local data like documents. But the macOS Mojave 10.14 beta 6 indicates that it can directly transfer whole accounts alongside account data from the Windows to Mac versions of programs like Outlook.