Mail Delivery is done here. Nothing is implemented and the API is still shaky.

@deftypefun int mailer_init (mailer_t *@var{mailer}, const char *@var{name}, int @var{flag})
Not Implemented.
@end deftypefun

@deftypefun int mailer_destroy (mailer_r *@var{mailer})
Not Implemented.
@end deftypefun

@deftypefun int mailer_user (mailer_t @var{mailer}, const char *@var{user})
Not Implemented.
@end deftypefun

@deftypefun int mailer_passwd (mailer_t @var{mailer}, const char *@var{passwd})
Not Implemented.
@end deftypefun

@deftypefun int mailer_open (mailer_t @var{mailer}, int @var{flag})
Not Implemented.
@end deftypefun

@deftypefun int mailer_close (mailer_t @var{mailer})
Not Implemented.
@end deftypefun

@deftypefun int mailer_set_body (mailer_t @var{mailer}, char *, size_t)
Not Implemented.
@end deftypefun

@deftypefun int mailer_set_header (mailer_t @var{mailer}, char *, size_t)
Not Implemented.
@end deftypefun

@deftypefun int mailer_set_timeout (mailer_t @var{mailer}, size_t)
Not Implemented.
@end deftypefun

@deftypefun int mailer_get_timeout (mailer_t @var{mailer}, size_t)
Not Implemented.
@end deftypefun

@deftypefun int mailer_send_envelope (mailer_t @var{mailer}, size_t)
Not Implemented.
@end deftypefun


@subsection Mailto
@cindex Mailto
The URL mailto: is supported.

TODO: example of mailto, and mailing lists,

@subsection SMTP
@cindex SMTP

TODO: todo

@subsection UUCP
@cindex UUCP

Yeurk ! It this to old ? Is it worth it ?

@subsection Sendmail
@cindex Sendmail

This is not a protocol, but someone may use it as the mailer, and
we provide the magic.

@subsection mailx
@cindex mailx

This is not a protocol, but someone may use it as the mailer, and
we provide the magic.

@subsection mail
@cindex mail

This is not a protocol, but someone may use it as the mailer, and
we provide the magic.

@subsection MPP
@cindex MPP

Mail Posting Protocol.