Microsoft's cross-platform Exchange Web Services (EWS) API will end on October 1, 2026. This change will affect Exchange Online customers utilizing EWS to access emails and contacts.

Microsoft said today that the Exchange Web Services (EWS) API for Exchange Online and Office 365 will be retired in approximately three years. EWS is a cross-platform API that can be used to ...

Microsoft is shutting down its cross-platform Exchange Web Services (EWS) API from October 1 2026, meaning users won’t be able to access their emails and contacts from Exchange Online.

Both of those will use ActiveSync and don't require EWS to my knowledge. Nine is really slick, it's like they took the stock KitKat mail app and fixed some of the stupid missing items in it.