CURLOPT_MAIL_RCPT

CURLOPT_MAIL_RCPT is one of the accepted parameters for curl_setopt parameter #2.

CURLOPT_MAIL_RCPT — Set to an array of strings with the recipients to pass to the server in an SMTP mail request. Each recipient should be specified within a pair of angled brackets (<>). If an angled bracket is not used as the first character, cURL assumes a single email address has been provided and encloses that address within brackets. Available as of cURL 7.20.0.

CURLOPT_MAIL_RCPT = 10187;