Additional Web Store Access Protocols

[This is preliminary documentation and subject to change.]

The following protocols are supported, primarily for accessing private, Web Store mailboxes:

• Post Office Protocol version 3 (POP3) — Used to access private Inbox folders. Resources in a private store are available through this reliable, yet simple, wire protocol. This protocol is ubiquitous in modern e-mail–client applications, such as Microsoft Outlook Express.
• IMAP4 — Used for rich access to private-folder hierarchies, including the Inbox folder. Resources in a private store and within various public stores are available through this industry-standard wire protocol. Users require only an IMAP4-supporting application to access resources through this protocol.