Google has released an updated Gmail API that functionally replaces the Email Settings API. The Gmail API includes a number of new endpoints that enable features previously unavailable through any Google API. Developers have access to filters, auto-replies, send-as aliases, and more.
To provide more options in searching for relevant contacts, Microsoft has decided to transition WorkingWith API users to its new People API. The People API not only provides more robust metadata than the WorkingWith API, the People API includes greater browse/search functionality and ranking system.