imap_subscribe Subscribe to a mailbox &reftitle.description; boolimap_subscribe resourceimap_stream stringmailbox Subscribe to a new mailbox. &reftitle.parameters; &imap.imap-stream.description; mailbox The mailbox name, see imap_open for more information &reftitle.returnvalues; &return.success; &reftitle.seealso; imap_unsubscribe