# IMAP, POP3 and NNTP

&reftitle.intro;

These functions enable you to operate with the IMAP protocol, as well as the NNTP, POP3 and local mailbox access methods.

Be warned, however, that some IMAP functions will not work correctly with the POP protocol.

The IMAP extension is not thread-safe; it should not be used with ZTS builds.

&reference.imap.setup; &reference.imap.constants; &reference.imap.reference; &reference.imap.imap.connection;