**************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at https://curl.haxx.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
**************************************************************************

CURLOPT_MAIL_FROM - SMTP sender address #include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_MAIL_FROM, char *from); Pass a pointer to a null-terminated string as parameter. This should be used to specify the sender's email address when sending SMTP mail with libcurl. An originator email address should be specified with angled brackets (<>) around it, which if not specified will be added automatically. If this parameter is not specified then an empty address will be sent to the mail server which may cause the email to be rejected. The application does not have to keep the string around after setting this option. blank SMTP

CURL *curl = curl_easy_init();
if(curl) {
 curl_easy_setopt(curl, CURLOPT_URL, "smtp://example.com/");
 curl_easy_setopt(curl, CURLOPT_MAIL_FROM, "president@example.com");
 ret = curl_easy_perform(curl);
 curl_easy_cleanup(curl);
}

Added in 7.20.0 Returns CURLE_OK if the option is supported, CURLE_UNKNOWN_OPTION if not, or CURLE_OUT_OF_MEMORY if there was insufficient heap space. CURLOPT_MAIL_RCPT "(3), " CURLOPT_MAIL_AUTH "(3), "