Description:

The IMAP4 protocol is quite complicated: it is feature rich and allows
various asynchronous actions. The main document describing IMAP is
rfc3501 (which obsoleted the original specification of protocol 4r1 in
rfc2060 in March 2003).

This package, as part of MailBox, does not implement the actual
protocol itself but uses Mail::IMAPClient to do the work. The task for
this package is to hide as many differences between that module's
interface and the common MailBox folder types. Multiple
Mail::Box::IMAP4 folders can share one Mail::Transport::IMAP4
connection.

The Mail::IMAPClient module is the best IMAP4 implementation for
Perl5, but is not maintained. There are many known problems with the
module, and solving those is outside the scope of MailBox. See
http://rt.cpan.org/Public/Dist/Display.html?Name=Mail-IMAPClient for
all the reported bugs.