add backward compat with mod_mbox permalinks
add backward compat with mod_mbox permalinks

Humbedooh/ponymail,rbowen/ponymail,quenda/ponymail,rbowen/ponymail,jimjag/ponymail,Humbedooh/ponymail,quenda/ponymail,Humbedooh/ponymail,jimjag/ponymail,rbowen/ponymail,quenda/ponymail,jimjag/ponymail,jimjag/ponymail