CURLOPT_MAIL_RCPT_ALLLOWFAILS - allow RCPT TO command to fail for some
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_MAIL_RCPT_ALLLOWFAILS,
If allow is set to 1L, allow RCPT TO command to fail for some recipients.
When sending data to multiple recipients, by default curl will
abort SMTP conversation if at least one of the recipients causes RCPT TO
command to return an error.
The default behavior can be changed by setting ignore to 1L
which will make curl ignore errors and proceed with the remaining valid
If all recipients trigger RCPT TO failures and this flag is
specified, curl will still abort the SMTP conversation and return the error
received from to the last RCPT TO command.
CURL *curl = curl_easy_init();
struct curl_slist *list;
/* Adding one valid and one invalid email address */
list = curl_slist_append(NULL, "firstname.lastname@example.org");
list = curl_slist_append(list, "invalidemailaddress");
curl_easy_setopt(curl, CURLOPT_URL, "smtp://example.com/");
curl_easy_setopt(curl, CURLOPT_MAIL_RCPT_ALLLOWFAILS, 1L);
ret = curl_easy_perform(curl);
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.