I have an MS 365 subscription, and even that Outlook is lacking features I value in the Apple Mail/Calendar/Contacts suite of apps:
- Outllook does not at all recognizes dates or contact data in mails, Apple mail does to some extent
- Outlook does not support arbitrary CalDav- and CardDarv-Servers to store calendar and contacts data
- there is no PGP-Addon available for Outlook on macOS (there is one for Apple Mail)