| 摘要 |
Architecture that employs an abstraction of a mailbox store that allows clients to connect to alternate mailboxes associated with a single mail-enabled user, using the same mechanism the user utilizes to connect to the user's main mailbox. On top of this basic infrastructure, new features can be built, including server-hosted e-mail archives and mailboxes mirrored from other e-mail systems. In support thereof, the architecture also includes a mechanism for mailboxes to expose all or only a subset of mailbox features, and to advertise which mailbox features are supported.
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