IMAP/POP3 Administration API?

[email protected] ("Christopher Cheng") Sun, 22 Jul 2001 19:41:01 +0800

Newsgroups	php.db,php.dev,php.doc,php.general,php.gtk,php.i18n,php.install,php.lang,php.mirrors,php.pear.cvs,php.pear.dev,php.pear.general,php.qa,php.test,php.windows
Message-ID	<[email protected]>

Is there any IMAP/POP3 API/Modules of Linux email system (Sendmail) written
in PHP?
I am looking for API to write a signup page for users.