API Flow diagram showing finding and syncing to a user's email folder with delta sync

Access and sync data more efficiently

You don't have to access a large amount of data every time to keep mail up to date. Using the delta query function in Microsoft Graph, you can access mail folders and sync messages to your application seamlessly. Minimize the amount of traffic sent across the network by fetching only the changes made to the mailbox since the last sync. An initial call to the endpoint provides a baseline for all subsequent changes, making fetching more efficient every time.