The Post Office Protocol (POP3) LIST+ Extension

Document Type Expired Internet-Draft (individual)
Last updated 2011-08-05
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Expired & archived
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


The Post Office Protocol - Version 3 (POP3) LIST+ Extension allows a POP3 client to instruct a POP3 server to send additional information with the LIST command response. It also can instruct a POP3 server to send only information about newly arrived messages, when polling for new messages. This will help save message round trips and network bandwidth, especially on large mailboxes containing several messages. On public POP3 servers, serving thousands of mailboxes, and being polled frequently, LIST+ will help reduce server load as well as network bandwith.


Steffen Lehmann (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)