GNOME Online Accounts (GOA)
GNOME Online Accounts is a way to configure core GNOME services and applications with a set of online accounts. It offers a list of online providers and account types that can be set up by the user. These are then used to offer various features. Calendar entries show up in GNOME Shell, e-mail in Evolution, online storages are exposed as GVolumes, and so on.
Here is a full matrix of all the different integration points for GOA accounts.
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