define('SMPREF_UNSEEN_ONLY', 1);
define('SMPREF_UNSEEN_TOTAL', 2);
+define('SMPREF_MAILBOX_SELECT_LONG', 0);
+define('SMPREF_MAILBOX_SELECT_INDENTED', 1);
+define('SMPREF_MAILBOX_SELECT_DELIMITED', 2);
+
/**
* Define constants for time/date display preferences.
* @since 1.2.0