nail [-BDdFintv~] [-s subject] [-a attachment ] [-c cc-addr] [-b bcc-addr] [-r from-addr] [-h hops] [-A account] to-addr . . . nail [-BDdeHiInNRv~] [-T name] [-A account] -f [name] nail [-BDdeinNRv~] [-A account] [-u user]
For more pls. see :
http://pwet.fr/man/linux/commandes/nail