What does the POP3 CAPA UIDL command do?

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Kevin Driedger picture Kevin Driedger · Sep 29, 2008 · Viewed 29.5k times · Source

What does the POP3 CAPA UIDL command do?

Answer

Sec picture Sec · Sep 29, 2008

It checks if the pop3 server understands (has the CAPAbility) the UIDL command.

The response should be "+OK" or "-ERR" depending on wether the server supports the UIDL command.

The UIDL command returns (if supported) an uniqe identify for each message, so a client can identify messages reliably.

See also: rfc2449(CAPA) and rfc1939(POP3).

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