imap_msgno Gets the message sequence number for the given UID &reftitle.description; intimap_msgno resourceimap_stream intuid Returns the message sequence number for the given uid. This function is the inverse of imap_uid. &reftitle.parameters; &imap.imap-stream.description; uid The message UID &reftitle.returnvalues; Returns the message sequence number for the given uid. &reftitle.seealso; imap_uid