Outlook Add-ins API
JavaScript API for building Outlook add-ins that extend Outlook functionality with custom features, using the Office.js library and the Mailbox requirement set.
Documentation
Documentation
https://learn.microsoft.com/en-us/office/dev/add-ins/outlook/
GettingStarted
https://learn.microsoft.com/en-us/office/dev/add-ins/quickstarts/outlook-quickstart-yo
APIReference
https://learn.microsoft.com/en-us/office/dev/add-ins/reference/javascript-api-for-office
Authentication
https://learn.microsoft.com/en-us/office/dev/add-ins/outlook/microsoft-graph