[POP3] is a widely-deployed mail access protocol. Many programs
access POP3 message stores, and thus need POP3 configuration
information. Since there are multiple configuration elements which
are required in order to access a mailbox, a single string
representation is convenient.
A POP3 mailbox (like an [IMAP4] mailbox) is a network resource, and
URLs are a widely-supported generalized representation of network
A means of specifying a POP3 mailbox as a URL will likely be useful
in many programs and protocols. [ACAP] is one case where a string
encapsulation of elements required to access network services is
needed. For example, an [IMAP4] message store is usually specified
in ACAP datasets as an [IMAP-URL].
This memo defines a URL scheme for referencing a POP mailbox.