Unknown option: "-3" Unix manual page for CURLOPT_MAIL_RCPT. (host=minya system=Darwin)
CURLOPT_MAIL_RCPT(3)       curl_easy_setopt options       CURLOPT_MAIL_RCPT(3)

NAME
       CURLOPT_MAIL_RCPT - list of SMTP mail recipients

SYNOPSIS
       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_MAIL_RCPT,
                                 struct curl_slist *rcpts);

DESCRIPTION
       Pass  a pointer to a linked list of recipients to pass to the server in
       your SMTP mail request. The linked list should be a fully valid list of
       struct curl_slist structs properly filled in. Use curl_slist_append(3)
       to create the list and curl_slist_free_all(3) to  clean  up  an  entire
       list.

       When  performing  a  mail  transfer, each recipient should be specified
       within a pair of angled brackets (<>), however, should you not  use  an
       angled  bracket as the first character libcurl will assume you provided
       a single email address and enclose that  address  within  brackets  for
       you.

       When  performing an address verification (VRFY command), each recipient
       should be specified as the user name or user name and  domain  (as  per
       Section 3.5 of RFC5321).

       When  performing  a  mailing list expand (EXPN command), each recipient
       should be specified using the mailing list name, such as  "Friends"  or
       "London-Office".

DEFAULT
       NULL

PROTOCOLS
       SMTP

EXAMPLE
       TODO

AVAILABILITY
       Added in 7.20.0. The VRFY and EXPN logic was added in 7.34.0

RETURN VALUE
       Returns  CURLE_OK  if the option is supported, and CURLE_UNKNOWN_OPTION
       if not.

SEE ALSO
       CURLOPT_MAIL_FROM(3), CURLOPT_MAIL_AUTH(3),

libcurl 7.54.0                 February 03, 2016          CURLOPT_MAIL_RCPT(3)