This is the third post in what accidentally became a trilogy about getting my Outlook add-in to work on mobile. Post one made the add-in visible on the phone. Post two made it functional by falling back to a Microsoft Graph call when getAsFileAsync wasn’t there. And in that second post I wrote …

What is Microsoft Graph? Microsoft Graph is the unified REST API for Microsoft 365. Think of it as a single gateway to access data across SharePoint, Teams, OneDrive, Outlook, Azure AD, and more - all through one consistent API. Graph vs CSOM/PnP.Framework: Graph: Modern REST API, works across all …

App registration Go to https://portal.azure.com and search for “App registrations”: Click “New registration” and fill out the name, and leave the “Supported account types” to default for now (Default: Accounts in this organizational directory only (xxx - Single …